ci(deb): restrict APT publish to v* release tags

Previously the workflow built and published on every push to master
and feature/debian-packaging in addition to v* tags. That meant the
gh-pages APT repo got overwritten on every commit with same-version
.debs, causing apt clients to see a phantom "update available" each
time and burning ~5-10 min of cross-compile CI per merge.

After this change:
  - PRs into master still cross-build .debs as a sanity check.
  - v* tags build, publish to gh-pages, and create a GitHub release.
  - workflow_dispatch remains as the manual escape hatch.
  - master pushes no longer trigger this workflow (ci.yml still runs).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

.github/workflows/build-deb.yml

@@ -0,0 +1,422 @@
+name: Build Debian Packages
+
+on:
+  # APT publishing is release-driven: we build + publish only on `v*` tag
+  # pushes. PRs into master still build the .debs as a sanity check (no
+  # publish). Manual dispatch is kept as an escape hatch.
+  push:
+    tags:
+      - "v*"
+  pull_request:
+    branches:
+      - master
+  workflow_dispatch:
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  build-deb:
+    name: Build .deb for ${{ matrix.target }}
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        include:
+          - target: x86_64-unknown-linux-gnu
+            arch: amd64
+          - target: aarch64-unknown-linux-gnu
+            arch: arm64
+          - target: armv7-unknown-linux-gnueabihf
+            arch: armhf
+          - target: riscv64gc-unknown-linux-gnu
+            arch: riscv64
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Install Rust toolchain
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          targets: ${{ matrix.target }}
+
+      - name: Install cargo-deb
+        run: cargo install cargo-deb
+
+      - name: Install build dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y dpkg-dev
+
+      - name: Install cross-compilation tools (ARM64)
+        if: matrix.target == 'aarch64-unknown-linux-gnu'
+        run: |
+          sudo dpkg --add-architecture arm64
+          # Disable all existing sources and create new ones with proper arch specifications
+          sudo mv /etc/apt/sources.list /etc/apt/sources.list.backup
+          sudo mv /etc/apt/sources.list.d /etc/apt/sources.list.d.backup || true
+          sudo mkdir -p /etc/apt/sources.list.d
+          # Clear APT cache and lists
+          sudo rm -rf /var/lib/apt/lists/*
+          sudo mkdir -p /var/lib/apt/lists/partial
+          # Create new sources.list with both amd64 and arm64
+          cat << EOF | sudo tee /etc/apt/sources.list
+          deb [arch=amd64] http://archive.ubuntu.com/ubuntu $(lsb_release -sc) main universe restricted multiverse
+          deb [arch=amd64] http://archive.ubuntu.com/ubuntu $(lsb_release -sc)-updates main universe restricted multiverse
+          deb [arch=amd64] http://archive.ubuntu.com/ubuntu $(lsb_release -sc)-backports main universe restricted multiverse
+          deb [arch=amd64] http://security.ubuntu.com/ubuntu $(lsb_release -sc)-security main universe restricted multiverse
+          deb [arch=arm64] http://ports.ubuntu.com/ubuntu-ports $(lsb_release -sc) main universe restricted multiverse
+          deb [arch=arm64] http://ports.ubuntu.com/ubuntu-ports $(lsb_release -sc)-updates main universe restricted multiverse
+          deb [arch=arm64] http://ports.ubuntu.com/ubuntu-ports $(lsb_release -sc)-backports main universe restricted multiverse
+          deb [arch=arm64] http://ports.ubuntu.com/ubuntu-ports $(lsb_release -sc)-security main universe restricted multiverse
+          EOF
+          echo "=== Contents of /etc/apt/sources.list ==="
+          cat /etc/apt/sources.list
+          echo "=== Contents of /etc/apt/sources.list.d/ ==="
+          ls -la /etc/apt/sources.list.d/ || true
+          sudo apt-get update
+          sudo apt-get install -y gcc-aarch64-linux-gnu libdrm-dev:arm64 libdrm-amdgpu1:arm64
+
+      - name: Install cross-compilation tools (ARMhf)
+        if: matrix.target == 'armv7-unknown-linux-gnueabihf'
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y gcc-arm-linux-gnueabihf
+
+      - name: Install cross-compilation tools (RISC-V)
+        if: matrix.target == 'riscv64gc-unknown-linux-gnu'
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y gcc-riscv64-linux-gnu
+
+      - name: Install GPU libraries (x86_64)
+        if: matrix.target == 'x86_64-unknown-linux-gnu'
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y libdrm-dev libdrm-amdgpu1
+
+      - name: Configure cross-compilation (ARM64)
+        if: matrix.target == 'aarch64-unknown-linux-gnu'
+        run: |
+          mkdir -p .cargo
+          cat >> .cargo/config.toml << EOF
+          [target.aarch64-unknown-linux-gnu]
+          linker = "aarch64-linux-gnu-gcc"
+          EOF
+
+      - name: Configure cross-compilation (ARMhf)
+        if: matrix.target == 'armv7-unknown-linux-gnueabihf'
+        run: |
+          mkdir -p .cargo
+          cat >> .cargo/config.toml << EOF
+          [target.armv7-unknown-linux-gnueabihf]
+          linker = "arm-linux-gnueabihf-gcc"
+          EOF
+
+      - name: Configure cross-compilation (RISC-V)
+        if: matrix.target == 'riscv64gc-unknown-linux-gnu'
+        run: |
+          mkdir -p .cargo
+          cat >> .cargo/config.toml << EOF
+          [target.riscv64gc-unknown-linux-gnu]
+          linker = "riscv64-linux-gnu-gcc"
+          EOF
+
+      - name: Cache cargo registry
+        uses: actions/cache@v4
+        with:
+          path: ~/.cargo/registry
+          key: ${{ runner.os }}-cargo-registry-${{ hashFiles('**/Cargo.lock') }}
+
+      - name: Cache cargo index
+        uses: actions/cache@v4
+        with:
+          path: ~/.cargo/git
+          key: ${{ runner.os }}-cargo-index-${{ hashFiles('**/Cargo.lock') }}
+
+      - name: Cache target directory
+        uses: actions/cache@v4
+        with:
+          path: target
+          key: ${{ runner.os }}-target-${{ matrix.target }}-${{ hashFiles('**/Cargo.lock') }}
+
+      - name: Build socktop .deb package
+        run: |
+          cargo deb --package socktop --target ${{ matrix.target }} --no-strip
+
+      - name: Build socktop_agent .deb package (with GPU support)
+        if: matrix.target == 'x86_64-unknown-linux-gnu' || matrix.target == 'aarch64-unknown-linux-gnu'
+        run: |
+          cargo deb --package socktop_agent --target ${{ matrix.target }} --no-strip
+
+      - name: Build socktop_agent .deb package (without GPU support)
+        if: matrix.target == 'armv7-unknown-linux-gnueabihf' || matrix.target == 'riscv64gc-unknown-linux-gnu'
+        run: |
+          cargo deb --package socktop_agent --target ${{ matrix.target }} --no-strip --no-default-features
+
+      - name: Copy packages to debs directory
+        run: |
+          mkdir -p debs
+          cp target/${{ matrix.target }}/debian/*.deb debs/
+
+      - name: List generated packages
+        run: ls -lh debs/
+
+      - name: Upload .deb packages as artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: debian-packages-${{ matrix.arch }}
+          path: debs/*.deb
+          if-no-files-found: error
+          retention-days: 90
+
+  # Combine all artifacts into a single downloadable archive
+  combine-artifacts:
+    name: Combine all .deb packages
+    needs: build-deb
+    runs-on: ubuntu-latest
+    steps:
+      - name: Download AMD64 packages
+        uses: actions/download-artifact@v4
+        with:
+          name: debian-packages-amd64
+          path: all-debs
+
+      - name: Download ARM64 packages
+        uses: actions/download-artifact@v4
+        with:
+          name: debian-packages-arm64
+          path: all-debs
+
+      - name: Download ARMhf packages
+        uses: actions/download-artifact@v4
+        with:
+          name: debian-packages-armhf
+          path: all-debs
+
+      - name: Download RISC-V packages
+        uses: actions/download-artifact@v4
+        with:
+          name: debian-packages-riscv64
+          path: all-debs
+
+      - name: List all packages
+        run: |
+          echo "All generated .deb packages:"
+          ls -lh all-debs/
+
+      - name: Upload combined artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: all-debian-packages
+          path: all-debs/*.deb
+          if-no-files-found: error
+          retention-days: 90
+
+      - name: Generate checksums
+        run: |
+          cd all-debs
+          sha256sum *.deb > SHA256SUMS
+          cat SHA256SUMS
+
+      - name: Upload checksums
+        uses: actions/upload-artifact@v4
+        with:
+          name: checksums
+          path: all-debs/SHA256SUMS
+          retention-days: 90
+
+  # Publish packages to gh-pages APT repository
+  publish-apt-repo:
+    name: Publish to APT Repository
+    needs: combine-artifacts
+    runs-on: ubuntu-latest
+    # Publish only on `v*` release tags — keep gh-pages stable between
+    # releases instead of overwriting same-version .debs on every commit.
+    if: startsWith(github.ref, 'refs/tags/v')
+    permissions:
+      contents: write
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Download all packages
+        uses: actions/download-artifact@v4
+        with:
+          name: all-debian-packages
+          path: debs
+
+      - name: Install dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y dpkg-dev gpg
+
+      - name: Checkout gh-pages branch
+        run: |
+          git fetch origin gh-pages:gh-pages || echo "gh-pages branch doesn't exist yet"
+          if git show-ref --verify --quiet refs/heads/gh-pages; then
+            git checkout gh-pages
+          else
+            git checkout --orphan gh-pages
+            git rm -rf . 2>/dev/null || true
+            # Create basic structure
+            mkdir -p dists/stable/main/{binary-amd64,binary-arm64,binary-armhf,binary-riscv64}
+            mkdir -p pool/main
+          fi
+
+      - name: Copy packages to pool
+        run: |
+          mkdir -p pool/main
+          cp debs/*.deb pool/main/
+          ls -lh pool/main/
+
+      - name: Generate Packages files
+        run: |
+          for arch in amd64 arm64 armhf riscv64; do
+            mkdir -p dists/stable/main/binary-$arch
+            dpkg-scanpackages --arch $arch pool/main /dev/null > dists/stable/main/binary-$arch/Packages 2>/dev/null || true
+            if [ -s dists/stable/main/binary-$arch/Packages ]; then
+              gzip -9 -k -f dists/stable/main/binary-$arch/Packages
+              echo "Generated Packages file for $arch"
+            fi
+          done
+
+      - name: Generate Release file
+        run: |
+          cat > dists/stable/Release << EOF
+          Origin: socktop
+          Label: socktop
+          Suite: stable
+          Codename: stable
+          Architectures: amd64 arm64 armhf riscv64
+          Components: main
+          Description: socktop APT repository
+          Date: $(date -Ru)
+          EOF
+
+          # Add MD5Sum
+          echo "MD5Sum:" >> dists/stable/Release
+          for arch in amd64 arm64 armhf riscv64; do
+            for file in dists/stable/main/binary-$arch/Packages*; do
+              if [ -f "$file" ]; then
+                md5sum "$file" | awk '{print " " $1, "'$(stat -c%s "$file" 2>/dev/null || stat -f%z "$file" 2>/dev/null)'", "'"${file#dists/stable/}"'"}' >> dists/stable/Release
+              fi
+            done
+          done
+
+          # Add SHA256
+          echo "SHA256:" >> dists/stable/Release
+          for arch in amd64 arm64 armhf riscv64; do
+            for file in dists/stable/main/binary-$arch/Packages*; do
+              if [ -f "$file" ]; then
+                sha256sum "$file" | awk '{print " " $1, "'$(stat -c%s "$file" 2>/dev/null || stat -f%z "$file" 2>/dev/null)'", "'"${file#dists/stable/}"'"}' >> dists/stable/Release
+              fi
+            done
+          done
+
+      - name: Set GPG available flag
+        id: check_gpg
+        env:
+          GPG_PRIVATE_KEY: ${{ secrets.GPG_PRIVATE_KEY }}
+        run: |
+          if [ -n "$GPG_PRIVATE_KEY" ]; then
+            echo "available=true" >> $GITHUB_OUTPUT
+          else
+            echo "available=false" >> $GITHUB_OUTPUT
+          fi
+
+      - name: Import GPG key
+        if: steps.check_gpg.outputs.available == 'true'
+        env:
+          GPG_PRIVATE_KEY: ${{ secrets.GPG_PRIVATE_KEY }}
+        run: |
+          echo "$GPG_PRIVATE_KEY" | gpg --batch --import
+          gpg --list-secret-keys
+
+      - name: Sign repository
+        if: steps.check_gpg.outputs.available == 'true'
+        env:
+          GPG_KEY_ID: ${{ secrets.GPG_KEY_ID }}
+          GPG_PASSPHRASE: ${{ secrets.GPG_PASSPHRASE }}
+        run: |
+          if [ -n "$GPG_PASSPHRASE" ]; then
+            echo "$GPG_PASSPHRASE" | gpg --batch --yes --no-tty --pinentry-mode loopback --passphrase-fd 0 \
+              --default-key "$GPG_KEY_ID" \
+              -abs -o dists/stable/Release.gpg dists/stable/Release
+            echo "$GPG_PASSPHRASE" | gpg --batch --yes --no-tty --pinentry-mode loopback --passphrase-fd 0 \
+              --default-key "$GPG_KEY_ID" \
+              --clearsign -o dists/stable/InRelease dists/stable/Release
+          else
+            gpg --batch --yes --no-tty --pinentry-mode loopback \
+              --default-key "$GPG_KEY_ID" \
+              -abs -o dists/stable/Release.gpg dists/stable/Release
+            gpg --batch --yes --no-tty --pinentry-mode loopback \
+              --default-key "$GPG_KEY_ID" \
+              --clearsign -o dists/stable/InRelease dists/stable/Release
+          fi
+          gpg --armor --export "$GPG_KEY_ID" > KEY.gpg
+          echo "✓ Repository signed"
+
+      - name: Create unsigned repository notice
+        if: steps.check_gpg.outputs.available == 'false'
+        run: |
+          echo "⚠️  Warning: GPG_PRIVATE_KEY not set. Repository will be UNSIGNED."
+          echo "⚠️  Add GPG secrets to sign the repository automatically."
+          echo "To add secrets: Settings → Secrets and variables → Actions → Repository secrets"
+
+      - name: Copy index.html if exists
+        run: |
+          git checkout ${{ github.ref_name }} -- index.html 2>/dev/null || echo "No index.html in source branch"
+
+      - name: Commit and push to gh-pages
+        run: |
+          git config user.name "GitHub Actions"
+          git config user.email "actions@github.com"
+          git add .
+
+          if git diff --staged --quiet; then
+            echo "No changes to commit"
+          else
+            COMMIT_MSG="Update APT repository"
+            if [[ "${{ github.ref }}" == refs/tags/* ]]; then
+              COMMIT_MSG="$COMMIT_MSG - Release ${{ github.ref_name }}"
+            else
+              COMMIT_MSG="$COMMIT_MSG - $(date -u +'%Y-%m-%d %H:%M:%S UTC')"
+            fi
+            git commit -m "$COMMIT_MSG"
+            git push origin gh-pages
+            echo "✓ Published to gh-pages"
+          fi
+
+  # Optional: Create a release with the .deb files if this is a tag
+  create-release:
+    name: Create GitHub Release
+    needs: combine-artifacts
+    runs-on: ubuntu-latest
+    if: startsWith(github.ref, 'refs/tags/v')
+    permissions:
+      contents: write
+    steps:
+      - name: Download all packages
+        uses: actions/download-artifact@v4
+        with:
+          name: all-debian-packages
+          path: release-debs
+
+      - name: Download checksums
+        uses: actions/download-artifact@v4
+        with:
+          name: checksums
+          path: release-debs
+
+      - name: Create Release
+        uses: softprops/action-gh-release@v1
+        with:
+          files: release-debs/*
+          draft: false
+          prerelease: false
+          generate_release_notes: true
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.gitignore

@@ -1,7 +1,16 @@
 /target
 .vscode/
 /socktop-wasm-test/target
+/.cargo/
 
 # Documentation files from development sessions (context-specific, not for public repo)
 /OPTIMIZATION_PROCESS_DETAILS.md
 /THREAD_SUPPORT.md
+
+# APT Repository - Safety: Never commit private keys!
+*.asc
+*-private.key
+*-secret.key
+gpg-private-backup.key
+secring.gpg
+# Note: Release.gpg, InRelease, and KEY.gpg (public) ARE safe to commit

DEBIAN_PACKAGING_SUMMARY.md

@@ -0,0 +1,156 @@
+# Debian Packaging Implementation Summary
+
+## Overview
+
+Successfully implemented Debian packaging for socktop using `cargo-deb`, with GitHub Actions automation for building packages for both AMD64 and ARM64 architectures.
+
+## Branches Created
+
+1. **`feature/debian-packaging`** - Main branch with debian packaging implementation
+2. **`feature/man-pages`** - Separate branch for man pages work (to be researched further)
+
+## What Was Added
+
+### 1. Cargo.toml Updates
+
+Both `socktop/Cargo.toml` and `socktop_agent/Cargo.toml` were updated with:
+- `[package.metadata.deb]` sections
+- Package metadata (maintainer, description, dependencies)
+- Asset definitions (binaries, documentation)
+- Systemd service configuration (agent only)
+
+### 2. Systemd Service
+
+**File**: `socktop_agent/socktop-agent.service`
+- Runs as `socktop` user/group
+- Listens on port 3000 by default
+- Security hardening enabled
+- Disabled by default (user must explicitly enable)
+
+### 3. Maintainer Scripts
+
+**Directory**: `socktop_agent/debian/`
+
+- **`postinst`**: Creates `socktop` user/group, sets up `/var/lib/socktop` directory
+- **`postrm`**: Cleanup on package removal/purge
+
+### 4. GitHub Actions Workflow
+
+**File**: `.github/workflows/build-deb.yml`
+
+Features:
+- Builds for both x86_64 and ARM64
+- Triggered on:
+  - Push to `master` or `feature/debian-packaging`
+  - Pull requests to `master`
+  - Version tags (v*)
+  - Manual workflow dispatch
+- Creates artifacts:
+  - `debian-packages-amd64`
+  - `debian-packages-arm64`
+  - `all-debian-packages` (combined)
+  - `checksums` (SHA256SUMS)
+- Automatic GitHub releases for version tags
+
+### 5. Documentation
+
+**File**: `docs/DEBIAN_PACKAGING.md`
+
+Comprehensive guide covering:
+- Building packages locally
+- Cross-compilation for ARM64
+- Installation and configuration
+- Using GitHub Actions artifacts
+- Creating local APT repositories
+- Troubleshooting
+
+## Package Details
+
+### socktop (TUI Client)
+- **Binary**: `/usr/bin/socktop`
+- **Size**: ~3.5 MB (x86_64)
+- **Dependencies**: Auto-detected
+
+### socktop_agent (Daemon)
+- **Binary**: `/usr/bin/socktop_agent`
+- **Service**: `socktop-agent.service`
+- **User/Group**: `socktop` (created automatically)
+- **State directory**: `/var/lib/socktop`
+- **Size**: ~6.7 MB (x86_64)
+- **Dependencies**: Auto-detected
+
+## Testing
+
+Both packages successfully built locally:
+```
+✓ socktop_1.50.0-1_amd64.deb
+✓ socktop-agent_1.50.1-1_amd64.deb
+```
+
+Verified:
+- Package contents (dpkg -c)
+- Package metadata (dpkg -I)
+- Systemd service file inclusion
+- Maintainer scripts inclusion
+- Documentation inclusion
+
+## Usage
+
+### For Users
+
+Download pre-built packages from GitHub Actions artifacts:
+1. Go to Actions tab
+2. Select latest "Build Debian Packages" run
+3. Download architecture-specific artifact
+4. Install: `sudo dpkg -i socktop*.deb`
+
+### For Developers
+
+Build locally:
+```bash
+cargo install cargo-deb
+cargo deb --package socktop
+cargo deb --package socktop_agent
+```
+
+Cross-compile for ARM64:
+```bash
+rustup target add aarch64-unknown-linux-gnu
+sudo apt install gcc-aarch64-linux-gnu libc6-dev-arm64-cross
+cargo deb --package socktop --target aarch64-unknown-linux-gnu
+```
+
+## Next Steps
+
+To get packages in official APT repositories:
+
+1. **Short term**: Host packages on GitHub Releases (automated)
+2. **Medium term**: Create PPA for Ubuntu users
+3. **Long term**: Submit to Debian/Ubuntu official repositories
+
+## Files Modified/Created
+
+```
+Modified:
+  socktop/Cargo.toml
+  socktop_agent/Cargo.toml
+
+Created:
+  .github/workflows/build-deb.yml
+  docs/DEBIAN_PACKAGING.md
+  socktop_agent/socktop-agent.service
+  socktop_agent/debian/postinst
+  socktop_agent/debian/postrm
+```
+
+## Commit
+
+```
+532ed16 Add Debian packaging support with cargo-deb
+```
+
+## Resources
+
+- [cargo-deb documentation](https://github.com/kornelski/cargo-deb)
+- [Debian Policy Manual](https://www.debian.org/doc/debian-policy/)
+- Full documentation in `docs/DEBIAN_PACKAGING.md`

README.md

@@ -51,15 +51,23 @@ exec bash   # or: exec zsh / exec fish
 
 Windows (for the brave): install from https://rustup.rs with the MSVC toolchain. Yes, you’ll need Visual Studio Build Tools. You chose Windows — enjoy the ride.
 
-### Raspberry Pi / Ubuntu / PopOS (required)
+### Raspberry Pi / Ubuntu / PopOS (required for GPU support)
 
-Install GPU support with apt command below
+**Note:** GPU monitoring is only supported on x86_64 and aarch64 (64-bit ARM) platforms. ARMv7 (32-bit) and RISC-V builds do not include GPU support.
+
+For 64-bit systems with GPU support:
 
 ```bash
 sudo apt-get update
 sudo apt-get install libdrm-dev libdrm-amdgpu1
 ```
 
+For ARMv7 (32-bit Raspberry Pi), build with `--no-default-features` to disable GPU support:
+
+```bash
+cargo build --release -p socktop_agent --no-default-features
+```
+
 _Additional note for Raspberry Pi users. Please update your system to use the newest kernel available through app, kernel version 6.6+ will use considerably less overall CPU to run the agent. For example on a rpi4 the kernel < 6.6 the agent will consume .8 cpu but on the same hardware on > 6.6 the agent will consume only .2 cpu. (these numbers indicate continuous polling at web socket endpoints, when not in use the usage is 0)_
 
 ---

apt-repo/KEY.gpg

@@ -0,0 +1,42 @@
+-----BEGIN PGP PUBLIC KEY BLOCK-----
+
+mQGNBGkih7QBDADgX6sYMx2Lp6qcZxeCCizcy4TFsxcRJfp5mfbMplVES0hQToIP
+EMC11JqPwQdLliXKjUr8Z2kgM2oqvH+dkdgzUGrw6kTK8YHc+qs37iJAOVS9D72X
+tTld282NrtFwzb74nS2GKPkpWI7aSKBpHtWFPX/1ONsc56qGqFd3wwikEvCz8MeJ
+HwCD1JZ9F+2DyyXWsTJNgDwPloJSUbtyVuk2gd6PeTg7AQdx92Pk/mggmYbHtP8N
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+FYNh47TVQr0zPVSYR1MQkHU5YLBTDc5UgDvtcsYUiTtq4D/m8HWmKja0/UKGxvDJ
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apt-repo/README.md

@@ -0,0 +1,38 @@
+# socktop APT Repository
+
+This repository contains Debian packages for socktop and socktop-agent.
+
+## Adding this repository
+
+Add the repository to your system:
+
+```bash
+# Add the GPG key
+curl -fsSL https://jasonwitty.github.io/socktop/KEY.gpg | sudo gpg --dearmor -o /usr/share/keyrings/socktop-archive-keyring.gpg
+
+# Add the repository
+echo "deb [signed-by=/usr/share/keyrings/socktop-archive-keyring.gpg] https://jasonwitty.github.io/socktop stable main" | sudo tee /etc/apt/sources.list.d/socktop.list
+
+# Update and install
+sudo apt update
+sudo apt install socktop socktop-agent
+```
+
+## Manual Installation
+
+You can also download and install packages manually from the `pool/main/` directory.
+
+```bash
+wget https://jasonwitty.github.io/socktop/pool/main/socktop_VERSION_ARCH.deb
+sudo dpkg -i socktop_VERSION_ARCH.deb
+```
+
+## Supported Architectures
+
+- amd64 (x86_64)
+- arm64 (aarch64)
+- armhf (32-bit ARM)
+
+## Building from Source
+
+See the main repository at https://github.com/jasonwitty/socktop

apt-repo/dists/stable/InRelease

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+Origin: socktop
+Label: socktop
+Suite: stable
+Codename: stable
+Architectures: amd64 arm64 armhf
+Components: main
+Description: socktop APT repository
+Date: Sun, 23 Nov 2025 04:05:21 +0000
+MD5Sum:
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+-----END PGP SIGNATURE-----

apt-repo/dists/stable/Release

@@ -0,0 +1,14 @@
+Origin: socktop
+Label: socktop
+Suite: stable
+Codename: stable
+Architectures: amd64 arm64 armhf
+Components: main
+Description: socktop APT repository
+Date: Sun, 23 Nov 2025 04:05:21 +0000
+MD5Sum:
+ 0bddefb2f13cb7c86cd05fe1ce20310f 1549 main/binary-amd64/Packages
+ 674f0e552cbb7dc65380651a2a8d279e 799 main/binary-amd64/Packages.gz
+SHA256:
+ babfbb4839e7fdfbc83742c16996791b0402a1315889b530330b338380398263 1549 main/binary-amd64/Packages
+ f8c48d0f7bf53eb02c6dbf5f1cdd046fe71b87273cf763c5bb2e95d9757a7a82 799 main/binary-amd64/Packages.gz

apt-repo/dists/stable/Release.gpg

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apt-repo/dists/stable/main/binary-amd64/Packages

@@ -0,0 +1,38 @@
+Package: socktop
+Version: 1.50.0-1
+Architecture: amd64
+Maintainer: Jason Witty <jasonpwitty+socktop@proton.me>
+Installed-Size: 3459
+Filename: pool/main/socktop_1.50.0-1_amd64.deb
+Size: 1278940
+MD5sum: 0215e178e306d9379669065e8c78582b
+SHA1: 04e0416389f5cecd584fd1f6b3568711f2645eee
+SHA256: 69eb04b1de48541c95950a97b16357fcd9c51ffaceb143f63de4a9d758fad297
+Section: admin
+Priority: optional
+Homepage: https://github.com/jasonwitty/socktop
+Description: Remote system monitor over WebSocket, TUI like top
+ socktop is a remote system monitor with a rich terminal user interface (TUI)
+ that connects to remote hosts running the socktop_agent over WebSocket. It
+ provides real-time monitoring of CPU, memory, processes, and more with an
+ interface similar to the traditional 'top' command.
+
+Package: socktop-agent
+Version: 1.50.2-1
+Architecture: amd64
+Maintainer: Jason Witty <jasonpwitty+socktop@proton.me>
+Installed-Size: 6793
+Filename: pool/main/socktop-agent_1.50.2-1_amd64.deb
+Size: 1896272
+MD5sum: 22e78d03e83dcf84d6ec4a009b285902
+SHA1: 26a9f4fedfdba06a047044027223f2944cf72ba6
+SHA256: 11922af475146f60347a9c52cff4bbce1ce524bdb4293b2c436f3c71876e17d5
+Section: admin
+Priority: optional
+Homepage: https://github.com/jasonwitty/socktop
+Description: Socktop agent daemon. Serves host metrics over WebSocket.
+ socktop_agent is the daemon component that runs on remote hosts to collect and
+ serve system metrics over WebSocket. It gathers CPU, memory, disk, network,
+ GPU, and process information that can be monitored remotely by the socktop TUI
+ client.
+

apt-repo/dists/stable/main/binary-amd64/Release

@@ -0,0 +1,5 @@
+Archive: stable
+Component: main
+Origin: socktop
+Label: socktop
+Architecture: amd64

apt-repo/index.html

@@ -0,0 +1,58 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>socktop APT Repository</title>
+    <style>
+        body {
+            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
+            max-width: 800px;
+            margin: 50px auto;
+            padding: 20px;
+            line-height: 1.6;
+        }
+        code {
+            background: #f4f4f4;
+            padding: 2px 6px;
+            border-radius: 3px;
+        }
+        pre {
+            background: #f4f4f4;
+            padding: 15px;
+            border-radius: 5px;
+            overflow-x: auto;
+        }
+        h1 { color: #333; }
+        h2 { color: #555; margin-top: 30px; }
+    </style>
+</head>
+<body>
+    <h1>socktop APT Repository</h1>
+    <p>System monitor with remote agent support for Linux systems.</p>
+
+    <h2>Adding this repository</h2>
+    <pre><code># Add the GPG key
+curl -fsSL https://jasonwitty.github.io/socktop/KEY.gpg | sudo gpg --dearmor -o /usr/share/keyrings/socktop-archive-keyring.gpg
+
+# Add the repository
+echo "deb [signed-by=/usr/share/keyrings/socktop-archive-keyring.gpg] https://jasonwitty.github.io/socktop stable main" | sudo tee /etc/apt/sources.list.d/socktop.list
+
+# Update and install
+sudo apt update
+sudo apt install socktop socktop-agent</code></pre>
+
+    <h2>Manual Installation</h2>
+    <p>Download packages from <a href="pool/main/">pool/main/</a></p>
+
+    <h2>Supported Architectures</h2>
+    <ul>
+        <li>amd64 (x86_64)</li>
+        <li>arm64 (aarch64)</li>
+        <li>armhf (32-bit ARM)</li>
+    </ul>
+
+    <h2>Source Code</h2>
+    <p>Visit the <a href="https://github.com/jasonwitty/socktop">GitHub repository</a></p>
+</body>
+</html>

docs/DEBIAN_PACKAGING.md

@@ -0,0 +1,274 @@
+# Debian Packaging for socktop
+
+This document describes how to build and use Debian packages for socktop and socktop_agent.
+
+## Prerequisites
+
+Install `cargo-deb`:
+
+```bash
+cargo install cargo-deb
+```
+
+## Building Packages Locally
+
+### Build for your current architecture (x86_64)
+
+```bash
+# Build socktop TUI client
+cargo deb --package socktop
+
+# Build socktop_agent daemon
+cargo deb --package socktop_agent
+```
+
+The `.deb` files will be created in `target/debian/`.
+
+### Cross-compile for ARM64 (Raspberry Pi, etc.)
+
+First, install cross-compilation tools:
+
+```bash
+sudo apt-get update
+sudo apt-get install gcc-aarch64-linux-gnu libc6-dev-arm64-cross
+```
+
+Add the ARM64 target:
+
+```bash
+rustup target add aarch64-unknown-linux-gnu
+```
+
+Configure the linker by creating `.cargo/config.toml`:
+
+```toml
+[target.aarch64-unknown-linux-gnu]
+linker = "aarch64-linux-gnu-gcc"
+```
+
+Build the packages:
+
+```bash
+# Build for ARM64
+cargo deb --package socktop --target aarch64-unknown-linux-gnu
+cargo deb --package socktop_agent --target aarch64-unknown-linux-gnu
+```
+
+## Installing Packages
+
+### Install socktop TUI client
+
+```bash
+sudo dpkg -i socktop_*.deb
+```
+
+### Install socktop_agent daemon
+
+```bash
+sudo dpkg -i socktop_agent_*.deb
+```
+
+The agent package will:
+- Create a `socktop` system user and group
+- Install the binary to `/usr/bin/socktop_agent`
+- Install a systemd service file (disabled by default)
+- Create `/var/lib/socktop` for state files
+
+### Enable and start the agent service
+
+```bash
+# Enable to start on boot
+sudo systemctl enable socktop-agent
+
+# Start the service
+sudo systemctl start socktop-agent
+
+# Check status
+sudo systemctl status socktop-agent
+```
+
+### Configure the agent
+
+Edit the systemd service to customize settings:
+
+```bash
+sudo systemctl edit socktop-agent
+```
+
+Add configuration in the override section:
+
+```ini
+[Service]
+Environment=SOCKTOP_PORT=8080
+Environment=SOCKTOP_TOKEN=your-secret-token
+Environment=RUST_LOG=info
+```
+
+Then restart:
+
+```bash
+sudo systemctl restart socktop-agent
+```
+
+## GitHub Actions
+
+The project includes a GitHub Actions workflow (`.github/workflows/build-deb.yml`) that automatically builds `.deb` packages for both x86_64 and ARM64 architectures on every push to master or when tags are created.
+
+### Downloading pre-built packages
+
+1. Go to the [Actions tab](https://github.com/jasonwitty/socktop/actions)
+2. Click on the latest "Build Debian Packages" workflow run
+3. Download the artifacts:
+   - `debian-packages-amd64` - x86_64 packages
+   - `debian-packages-arm64` - ARM64 packages
+   - `all-debian-packages` - All packages combined
+   - `checksums` - SHA256 checksums
+
+### Release packages
+
+When you create a git tag starting with `v` (e.g., `v1.50.0`), the workflow will automatically create a GitHub Release with all `.deb` packages attached.
+
+```bash
+git tag v1.50.0
+git push origin v1.50.0
+```
+
+## Package Details
+
+### socktop package
+
+- **Binary**: `/usr/bin/socktop`
+- **Documentation**: `/usr/share/doc/socktop/`
+- **Size**: ~5-8 MB (depends on architecture)
+
+### socktop_agent package
+
+- **Binary**: `/usr/bin/socktop_agent`
+- **Service**: `socktop-agent.service`
+- **User/Group**: `socktop`
+- **State directory**: `/var/lib/socktop`
+- **Config directory**: `/etc/socktop` (created but empty by default)
+- **Documentation**: `/usr/share/doc/socktop_agent/`
+- **Size**: ~5-8 MB (depends on architecture)
+
+## Uninstalling
+
+```bash
+# Remove packages but keep configuration
+sudo apt remove socktop socktop_agent
+
+# Remove packages and all configuration (purge)
+sudo apt purge socktop socktop_agent
+```
+
+When purging `socktop_agent`, the following are removed:
+- The `socktop` user and group
+- `/var/lib/socktop` directory
+- Empty `/etc/socktop` directory (if empty)
+
+## Verifying Packages
+
+Check package contents:
+
+```bash
+dpkg -c socktop_*.deb
+dpkg -c socktop_agent_*.deb
+```
+
+Check package information:
+
+```bash
+dpkg -I socktop_*.deb
+dpkg -I socktop_agent_*.deb
+```
+
+After installation, verify files:
+
+```bash
+dpkg -L socktop
+dpkg -L socktop-agent
+```
+
+## Troubleshooting
+
+### Service fails to start
+
+Check logs:
+
+```bash
+sudo journalctl -u socktop-agent -f
+```
+
+Verify the socktop user exists:
+
+```bash
+id socktop
+```
+
+### Permission issues
+
+Ensure the state directory has correct permissions:
+
+```bash
+sudo chown -R socktop:socktop /var/lib/socktop
+sudo chmod 755 /var/lib/socktop
+```
+
+### Missing dependencies
+
+If installation fails due to missing dependencies:
+
+```bash
+sudo apt --fix-broken install
+```
+
+## Creating a Local APT Repository (Advanced)
+
+To create your own APT repository for easy installation:
+
+1. Install required tools:
+   ```bash
+   sudo apt install dpkg-dev
+   ```
+
+2. Create repository structure:
+   ```bash
+   mkdir -p ~/socktop-repo/pool/main
+   cp *.deb ~/socktop-repo/pool/main/
+   ```
+
+3. Generate package index:
+   ```bash
+   cd ~/socktop-repo
+   dpkg-scanpackages pool/main /dev/null | gzip -9c > pool/main/Packages.gz
+   ```
+
+4. Serve via HTTP (for testing):
+   ```bash
+   cd ~/socktop-repo
+   python3 -m http.server 8000
+   ```
+
+5. Add to sources on client machines:
+   ```bash
+   echo "deb [trusted=yes] http://your-server:8000 pool/main/" | \
+     sudo tee /etc/apt/sources.list.d/socktop.list
+   sudo apt update
+   sudo apt install socktop socktop-agent
+   ```
+
+## Contributing
+
+When adding new features that affect packaging:
+
+1. Update `Cargo.toml` metadata in the `[package.metadata.deb]` section
+2. Add new assets to the `assets` array if needed
+3. Update maintainer scripts in `socktop_agent/debian/` if needed
+4. Test package building locally before committing
+5. Update this documentation
+
+## References
+
+- [cargo-deb documentation](https://github.com/kornelski/cargo-deb)
+- [Debian Policy Manual](https://www.debian.org/doc/debian-policy/)
+- [systemd service files](https://www.freedesktop.org/software/systemd/man/systemd.service.html)

docs/cross-compiling.md

@@ -2,6 +2,8 @@
 
 This guide explains how to cross-compile the socktop_agent on various host systems and deploy it to a Raspberry Pi. Cross-compiling is particularly useful for older or resource-constrained Pi models where native compilation might be slow.
 
+**Note:** GPU monitoring support is not available on ARMv7 (32-bit) and RISC-V architectures due to library limitations. When building for these platforms, the `--no-default-features` flag must be used to disable GPU support.
+
 ## Cross-Compilation Host Setup
 
 Choose your host operating system:
@@ -23,8 +25,9 @@ sudo apt update
 sudo apt install gcc-aarch64-linux-gnu libc6-dev-arm64-cross libdrm-dev:arm64
 
 # For 32-bit Raspberry Pi (armv7)
+# Note: GPU support not available on armv7
 sudo apt update
-sudo apt install gcc-arm-linux-gnueabihf libc6-dev-armhf-cross libdrm-dev:armhf
+sudo apt install gcc-arm-linux-gnueabihf libc6-dev-armhf-cross
 ```
 
 ### Setup Rust Cross-Compilation Targets
@@ -65,9 +68,8 @@ sudo pacman -S aarch64-linux-gnu-gcc
 yay -S aarch64-linux-gnu-libdrm
 
 # For 32-bit Raspberry Pi (armv7)
+# Note: GPU support not available on armv7
 sudo pacman -S arm-linux-gnueabihf-gcc
-# Install libdrm for armv7 using an AUR helper
-yay -S arm-linux-gnueabihf-libdrm
 ```
 
 ### Setup Rust Cross-Compilation Targets
@@ -114,8 +116,8 @@ cd path/to/socktop
 # For 64-bit Raspberry Pi
 docker run --rm -it -v "$(pwd)":/home/rust/src messense/rust-musl-cross:aarch64-musl cargo build --release --target aarch64-unknown-linux-musl -p socktop_agent
 
-# For 32-bit Raspberry Pi
-docker run --rm -it -v "$(pwd)":/home/rust/src messense/rust-musl-cross:armv7-musleabihf cargo build --release --target armv7-unknown-linux-musleabihf -p socktop_agent
+# For 32-bit Raspberry Pi (without GPU support)
+docker run --rm -it -v "$(pwd)":/home/rust/src messense/rust-musl-cross:armv7-musleabihf cargo build --release --target armv7-unknown-linux-musleabihf -p socktop_agent --no-default-features
 ```
 
 The compiled binaries will be available in your local target directory.
@@ -133,11 +135,11 @@ The recommended approach for Windows is to use Windows Subsystem for Linux (WSL2
 After setting up your environment, build the socktop_agent for your target Raspberry Pi:
 
 ```bash
-# For 64-bit Raspberry Pi
+# For 64-bit Raspberry Pi (with GPU support)
 cargo build --release --target aarch64-unknown-linux-gnu -p socktop_agent
 
-# For 32-bit Raspberry Pi
-cargo build --release --target armv7-unknown-linux-gnueabihf -p socktop_agent
+# For 32-bit Raspberry Pi (without GPU support)
+cargo build --release --target armv7-unknown-linux-gnueabihf -p socktop_agent --no-default-features
 ```
 
 ## Transfer the Binary to Your Raspberry Pi
@@ -161,11 +163,12 @@ SSH into your Raspberry Pi and install the required dependencies:
 ```bash
 ssh pi@raspberry-pi-ip
 
-# For Raspberry Pi OS (Debian-based)
+# For Raspberry Pi OS (Debian-based) - 64-bit only
+# (32-bit armv7 builds don't require these)
 sudo apt update
 sudo apt install libdrm-dev libdrm-amdgpu1
 
-# For Arch Linux ARM
+# For Arch Linux ARM - 64-bit only
 sudo pacman -Syu
 sudo pacman -S libdrm
 ```

socktop/Cargo.toml

@@ -1,15 +1,17 @@
 [package]
 name = "socktop"
-version = "1.40.0"
+version = "1.50.0"
 authors = ["Jason Witty <jasonpwitty+socktop@proton.me>"]
 description = "Remote system monitor over WebSocket, TUI like top"
 edition = "2024"
 license = "MIT"
 readme = "README.md"
+homepage = "https://github.com/jasonwitty/socktop"
+repository = "https://github.com/jasonwitty/socktop"
 
 [dependencies]
 # socktop connector for agent communication
-socktop_connector = { path = "../socktop_connector" }
+socktop_connector = "1.50.0"
 
 tokio = { workspace = true }
 futures-util = { workspace = true }
@@ -24,4 +26,21 @@ sysinfo = { workspace = true }
 
 [dev-dependencies]
 assert_cmd = "2.0"
-tempfile = "3"
+tempfile = "3"
+
+[package.metadata.deb]
+maintainer = "Jason Witty <jasonpwitty+socktop@proton.me>"
+copyright = "2024, Jason Witty <jasonpwitty+socktop@proton.me>"
+license-file = ["../LICENSE", "4"]
+extended-description = """\
+socktop is a remote system monitor with a rich terminal user interface (TUI) \
+that connects to remote hosts running the socktop_agent over WebSocket. \
+It provides real-time monitoring of CPU, memory, processes, and more with \
+an interface similar to the traditional 'top' command."""
+depends = "$auto"
+section = "admin"
+priority = "optional"
+assets = [
+    ["target/release/socktop", "usr/bin/", "755"],
+    ["../README.md", "usr/share/doc/socktop/", "644"],
+]

socktop/src/app.rs

@@ -29,12 +29,14 @@ use crate::ui::cpu::{
 };
 use crate::ui::modal::{ModalAction, ModalManager, ModalType};
 use crate::ui::processes::{
-    ProcSortBy, processes_handle_key_with_selection, processes_handle_mouse_with_selection,
+    ProcSortBy, ProcessKeyParams, get_filtered_sorted_indices, processes_handle_key_with_selection,
+    processes_handle_mouse_with_selection,
 };
 use crate::ui::{
     disks::draw_disks, gpu::draw_gpu, header::draw_header, mem::draw_mem, net::draw_net_spark,
     swap::draw_swap,
 };
+
 use socktop_connector::{
     AgentRequest, AgentResponse, SocktopConnector, connect_to_socktop_agent,
     connect_to_socktop_agent_with_tls,
@@ -83,6 +85,10 @@ pub struct App {
     pub selected_process_index: Option<usize>, // Index in the visible/sorted list
     prev_selected_process_pid: Option<u32>,    // Track previous selection to detect changes
 
+    // Process search state
+    pub process_search_active: bool,
+    pub process_search_query: String,
+
     last_procs_poll: Instant,
     last_disks_poll: Instant,
     procs_interval: Duration,
@@ -98,7 +104,8 @@ pub struct App {
     pub process_io_write_history: VecDeque<u64>, // Disk write DELTA history in bytes (last 60 samples)
     last_io_read_bytes: Option<u64>,             // Previous read bytes for delta calculation
     last_io_write_bytes: Option<u64>,            // Previous write bytes for delta calculation
-    pub process_details_unsupported: bool,       // Track if agent doesn't support process details
+    pub max_process_mem_bytes: u64, // Maximum memory usage observed for current process
+    pub process_details_unsupported: bool, // Track if agent doesn't support process details
     last_process_details_poll: Instant,
     last_journal_poll: Instant,
     process_details_interval: Duration,
@@ -145,6 +152,8 @@ impl App {
             selected_process_pid: None,
             selected_process_index: None,
             prev_selected_process_pid: None,
+            process_search_active: false,
+            process_search_query: String::new(),
             last_procs_poll: Instant::now()
                 .checked_sub(Duration::from_secs(2))
                 .unwrap_or_else(Instant::now), // trigger immediately on first loop
@@ -162,6 +171,7 @@ impl App {
             process_io_write_history: VecDeque::with_capacity(600),
             last_io_read_bytes: None,
             last_io_write_bytes: None,
+            max_process_mem_bytes: 0,
             process_details_unsupported: false,
             last_process_details_poll: Instant::now()
                 .checked_sub(Duration::from_secs(10))
@@ -614,7 +624,8 @@ impl App {
                                     {
                                         self.clear_process_details();
                                     }
-                                    // Modal was dismissed, continue to normal processing
+                                    // Modal was dismissed, skip normal key processing
+                                    continue;
                                 }
                                 ModalAction::Confirm => {
                                     // Handle confirmation action here if needed in the future
@@ -647,6 +658,53 @@ impl App {
                             }
                         }
 
+                        // Handle search mode
+                        if self.process_search_active {
+                            match k.code {
+                                KeyCode::Esc => {
+                                    // Exit search mode
+                                    self.process_search_active = false;
+                                    self.process_search_query.clear();
+                                    continue;
+                                }
+                                KeyCode::Enter => {
+                                    // Exit search mode, keep filter active, and auto-select first result
+                                    self.process_search_active = false;
+
+                                    // Auto-select first filtered result
+                                    if let Some(m) = self.last_metrics.as_ref() {
+                                        let idxs = get_filtered_sorted_indices(
+                                            m,
+                                            &self.process_search_query,
+                                            self.procs_sort_by,
+                                        );
+                                        if !idxs.is_empty() {
+                                            let first_idx = idxs[0];
+                                            self.selected_process_index = Some(first_idx);
+                                            self.selected_process_pid =
+                                                Some(m.top_processes[first_idx].pid);
+                                        }
+                                    }
+                                    continue;
+                                }
+                                KeyCode::Backspace => {
+                                    self.process_search_query.pop();
+                                    continue;
+                                }
+                                KeyCode::Char(c) => {
+                                    self.process_search_query.push(c);
+                                    continue;
+                                }
+                                KeyCode::Up | KeyCode::Down => {
+                                    // Allow arrow keys to navigate even while in search mode
+                                    // Fall through to normal navigation handling
+                                }
+                                _ => {
+                                    continue; // Block other keys in search mode
+                                }
+                            }
+                        }
+
                         // Normal key handling (only if no modal is active or modal didn't consume the key)
                         if matches!(
                             k.code,
@@ -654,6 +712,35 @@ impl App {
                         ) {
                             self.should_quit = true;
                         }
+
+                        // Activate search mode on '/' (clears query if starting new search, or edits existing)
+                        if matches!(k.code, KeyCode::Char('/')) {
+                            self.process_search_active = true;
+                            // Don't clear query - allow editing existing search
+                            continue;
+                        }
+
+                        // Clear search filter on 'c' or 'C' (when not in search mode)
+                        if matches!(k.code, KeyCode::Char('c') | KeyCode::Char('C'))
+                            && !self.process_search_query.is_empty()
+                            && !self.process_search_active
+                        {
+                            self.process_search_query.clear();
+                            self.selected_process_pid = None;
+                            self.selected_process_index = None;
+                            continue;
+                        }
+
+                        // Show About modal on 'a' or 'A'
+                        if matches!(k.code, KeyCode::Char('a') | KeyCode::Char('A')) {
+                            self.modal_manager.push_modal(ModalType::About);
+                        }
+
+                        // Show Help modal on 'h' or 'H'
+                        if matches!(k.code, KeyCode::Char('h') | KeyCode::Char('H')) {
+                            self.modal_manager.push_modal(ModalType::Help);
+                        }
+
                         // Per-core scroll via keys (Up/Down/PageUp/PageDown/Home/End)
                         let sz = terminal.size()?;
                         let area = Rect::new(0, 0, sz.width, sz.height);
@@ -674,22 +761,15 @@ impl App {
                         let content = per_core_content_area(top[1]);
 
                         // First try process selection (only handles arrows if a process is selected)
-                        let process_handled = if let Some(p_area) = self.last_procs_area {
-                            let page = p_area.height.saturating_sub(3).max(1) as usize; // borders (2) + header (1)
-                            let total_rows = self
-                                .last_metrics
-                                .as_ref()
-                                .map(|m| m.top_processes.len())
-                                .unwrap_or(0);
-                            processes_handle_key_with_selection(
-                                &mut self.procs_scroll_offset,
-                                &mut self.selected_process_pid,
-                                &mut self.selected_process_index,
-                                k,
-                                page,
-                                total_rows,
-                                self.last_metrics.as_ref(),
-                            )
+                        let process_handled = if self.last_procs_area.is_some() {
+                            processes_handle_key_with_selection(ProcessKeyParams {
+                                selected_process_pid: &mut self.selected_process_pid,
+                                selected_process_index: &mut self.selected_process_index,
+                                key: k,
+                                metrics: self.last_metrics.as_ref(),
+                                sort_by: self.procs_sort_by,
+                                search_query: &self.process_search_query,
+                            })
                         } else {
                             false
                         };
@@ -703,6 +783,46 @@ impl App {
                             );
                         }
 
+                        // Auto-scroll to keep selected process visible
+                        if let (Some(selected_idx), Some(p_area)) =
+                            (self.selected_process_index, self.last_procs_area)
+                            && let Some(m) = self.last_metrics.as_ref()
+                        {
+                            // Get filtered and sorted indices (same as display)
+                            let idxs = get_filtered_sorted_indices(
+                                m,
+                                &self.process_search_query,
+                                self.procs_sort_by,
+                            );
+
+                            // Find the display position of the selected process in filtered list
+                            if let Some(display_pos) =
+                                idxs.iter().position(|&idx| idx == selected_idx)
+                            {
+                                // Calculate viewport size
+                                // Account for: borders (2) + header (1) + search box if active (3)
+                                let extra_rows = if self.process_search_active
+                                    || !self.process_search_query.is_empty()
+                                {
+                                    3 // search box with border
+                                } else {
+                                    0
+                                };
+                                let viewport_rows =
+                                    p_area.height.saturating_sub(3 + extra_rows) as usize;
+
+                                // Adjust scroll offset to keep selection visible
+                                if display_pos < self.procs_scroll_offset {
+                                    // Selection is above viewport, scroll up
+                                    self.procs_scroll_offset = display_pos;
+                                } else if display_pos >= self.procs_scroll_offset + viewport_rows {
+                                    // Selection is below viewport, scroll down
+                                    self.procs_scroll_offset =
+                                        display_pos.saturating_sub(viewport_rows - 1);
+                                }
+                            }
+                        }
+
                         // Check if process selection changed and clear details if so
                         if self.selected_process_pid != self.prev_selected_process_pid {
                             self.clear_process_details();
@@ -799,6 +919,7 @@ impl App {
                                     total_rows: mm.top_processes.len(),
                                     metrics: self.last_metrics.as_ref(),
                                     sort_by: self.procs_sort_by,
+                                    search_query: &self.process_search_query,
                                 })
                             {
                                 self.procs_sort_by = new_sort;
@@ -884,6 +1005,11 @@ impl App {
                                         let mem_bytes = details.process.mem_bytes;
                                         push_capped(&mut self.process_mem_history, mem_bytes, 600);
 
+                                        // Track maximum memory usage
+                                        if mem_bytes > self.max_process_mem_bytes {
+                                            self.max_process_mem_bytes = mem_bytes;
+                                        }
+
                                         // I/O bytes from agent are cumulative, calculate deltas
                                         if let Some(read) = details.process.read_bytes {
                                             let delta = if let Some(last) = self.last_io_read_bytes
@@ -989,6 +1115,7 @@ impl App {
         self.process_io_write_history.clear();
         self.last_io_read_bytes = None;
         self.last_io_write_bytes = None;
+        self.max_process_mem_bytes = 0;
         self.process_details_unsupported = false;
     }
 
@@ -1148,11 +1275,15 @@ impl App {
         crate::ui::processes::draw_top_processes(
             f,
             procs_area,
-            self.last_metrics.as_ref(),
-            self.procs_scroll_offset,
-            self.procs_sort_by,
-            self.selected_process_pid,
-            self.selected_process_index,
+            crate::ui::processes::ProcessDisplayParams {
+                metrics: self.last_metrics.as_ref(),
+                scroll_offset: self.procs_scroll_offset,
+                sort_by: self.procs_sort_by,
+                selected_process_pid: self.selected_process_pid,
+                selected_process_index: self.selected_process_index,
+                search_query: &self.process_search_query,
+                search_active: self.process_search_active,
+            },
         );
 
         // Render modals on top of everything else
@@ -1169,6 +1300,7 @@ impl App {
                         io_read: &self.process_io_read_history,
                         io_write: &self.process_io_write_history,
                     },
+                    max_mem_bytes: self.max_process_mem_bytes,
                     unsupported: self.process_details_unsupported,
                 },
             );
@@ -1197,6 +1329,8 @@ impl Default for App {
             selected_process_pid: None,
             selected_process_index: None,
             prev_selected_process_pid: None,
+            process_search_active: false,
+            process_search_query: String::new(),
             last_procs_poll: Instant::now()
                 .checked_sub(Duration::from_secs(2))
                 .unwrap_or_else(Instant::now), // trigger immediately on first loop
@@ -1214,6 +1348,7 @@ impl Default for App {
             process_io_write_history: VecDeque::with_capacity(600),
             last_io_read_bytes: None,
             last_io_write_bytes: None,
+            max_process_mem_bytes: 0,
             process_details_unsupported: false,
             last_process_details_poll: Instant::now()
                 .checked_sub(Duration::from_secs(10))

socktop/src/ui/cpu.rs

@@ -42,8 +42,8 @@ pub fn per_core_content_area(area: Rect) -> Rect {
 /// Handles key events for per-core CPU bars.
 pub fn per_core_handle_key(scroll_offset: &mut usize, key: KeyEvent, page_size: usize) {
     match key.code {
-        KeyCode::Up => *scroll_offset = scroll_offset.saturating_sub(1),
-        KeyCode::Down => *scroll_offset = scroll_offset.saturating_add(1),
+        KeyCode::Left => *scroll_offset = scroll_offset.saturating_sub(1),
+        KeyCode::Right => *scroll_offset = scroll_offset.saturating_add(1),
         KeyCode::PageUp => {
             let step = page_size.max(1);
             *scroll_offset = scroll_offset.saturating_sub(step);
@@ -240,20 +240,61 @@ pub fn draw_cpu_avg_graph(
     hist: &std::collections::VecDeque<u64>,
     m: Option<&Metrics>,
 ) {
+    // Calculate average CPU over the monitoring period
+    let avg_cpu = if !hist.is_empty() {
+        let sum: u64 = hist.iter().sum();
+        sum as f64 / hist.len() as f64
+    } else {
+        0.0
+    };
+
     let title = if let Some(mm) = m {
-        format!("CPU avg (now: {:>5.1}%)", mm.cpu_total)
+        format!("CPU (now: {:>5.1}% | avg: {:>5.1}%)", mm.cpu_total, avg_cpu)
     } else {
         "CPU avg".into()
     };
+
+    // Build the top-right info (CPU temp and polling intervals)
+    let top_right_info = if let Some(mm) = m {
+        mm.cpu_temp_c
+            .map(|t| {
+                let icon = if t < 50.0 {
+                    "😎"
+                } else if t < 85.0 {
+                    "⚠️"
+                } else {
+                    "🔥"
+                };
+                format!("CPU Temp: {t:.1}°C {icon}")
+            })
+            .unwrap_or_else(|| "CPU Temp: N/A".into())
+    } else {
+        String::new()
+    };
+
     let max_points = area.width.saturating_sub(2) as usize;
     let start = hist.len().saturating_sub(max_points);
     let data: Vec<u64> = hist.iter().skip(start).cloned().collect();
+
+    // Render the sparkline with title on left
     let spark = Sparkline::default()
         .block(Block::default().borders(Borders::ALL).title(title))
         .data(&data)
         .max(100)
         .style(Style::default().fg(Color::Cyan));
     f.render_widget(spark, area);
+
+    // Render the top-right info as text overlay in the top-right corner
+    if !top_right_info.is_empty() {
+        let info_area = Rect {
+            x: area.x + area.width.saturating_sub(top_right_info.len() as u16 + 2),
+            y: area.y,
+            width: top_right_info.len() as u16 + 1,
+            height: 1,
+        };
+        let info_line = Line::from(Span::raw(top_right_info));
+        f.render_widget(Paragraph::new(info_line), info_area);
+    }
 }
 
 /// Draws the per-core CPU bars with sparklines and trends.

socktop/src/ui/header.rs

@@ -3,7 +3,8 @@
 use crate::types::Metrics;
 use ratatui::{
     layout::Rect,
-    widgets::{Block, Borders},
+    text::{Line, Span},
+    widgets::{Block, Borders, Paragraph},
 };
 use std::time::Duration;
 
@@ -17,20 +18,7 @@ pub fn draw_header(
     procs_interval: Duration,
 ) {
     let base = if let Some(mm) = m {
-        let temp = mm
-            .cpu_temp_c
-            .map(|t| {
-                let icon = if t < 50.0 {
-                    "😎"
-                } else if t < 85.0 {
-                    "⚠️"
-                } else {
-                    "🔥"
-                };
-                format!("CPU Temp: {t:.1}°C {icon}")
-            })
-            .unwrap_or_else(|| "CPU Temp: N/A".into());
-        format!("socktop — host: {} | {}", mm.hostname, temp)
+        format!("socktop — host: {}", mm.hostname)
     } else {
         "socktop — connecting...".into()
     };
@@ -38,15 +26,30 @@ pub fn draw_header(
     let tls_txt = if is_tls { "🔒 TLS" } else { "🔒✗ TLS" };
     // Token indicator
     let tok_txt = if has_token { "🔑 token" } else { "" };
-    let mi = metrics_interval.as_millis();
-    let pi = procs_interval.as_millis();
-    let intervals = format!("⏱  {mi}ms metrics | {pi}ms procs");
     let mut parts = vec![base, tls_txt.into()];
     if !tok_txt.is_empty() {
         parts.push(tok_txt.into());
     }
-    parts.push(intervals);
-    parts.push("(q to quit)".into());
+    parts.push("(a: about, h: help, q: quit)".into());
     let title = parts.join(" | ");
+
+    // Render the block with left-aligned title
     f.render_widget(Block::default().title(title).borders(Borders::BOTTOM), area);
+
+    // Render polling intervals on the right side
+    let mi = metrics_interval.as_millis();
+    let pi = procs_interval.as_millis();
+    let intervals = format!("⏱ {mi}ms metrics | {pi}ms procs");
+    let intervals_width = intervals.len() as u16;
+
+    if area.width > intervals_width + 2 {
+        let right_area = Rect {
+            x: area.x + area.width.saturating_sub(intervals_width + 1),
+            y: area.y,
+            width: intervals_width,
+            height: 1,
+        };
+        let intervals_line = Line::from(Span::raw(intervals));
+        f.render_widget(Paragraph::new(intervals_line), right_area);
+    }
 }

socktop/src/ui/modal.rs

@@ -6,6 +6,7 @@ use ratatui::{
     Frame,
     layout::{Alignment, Constraint, Direction, Layout, Rect},
     style::{Color, Modifier, Style},
+    text::Line,
     widgets::{Block, Borders, Clear, Paragraph, Wrap},
 };
 
@@ -22,6 +23,7 @@ pub struct ModalManager {
     pub journal_scroll_offset: usize,
     pub thread_scroll_max: usize,
     pub journal_scroll_max: usize,
+    pub help_scroll_offset: usize,
 }
 
 impl ModalManager {
@@ -33,6 +35,7 @@ impl ModalManager {
             journal_scroll_offset: 0,
             thread_scroll_max: 0,
             journal_scroll_max: 0,
+            help_scroll_offset: 0,
         }
     }
     pub fn is_active(&self) -> bool {
@@ -55,6 +58,12 @@ impl ModalManager {
                 self.journal_scroll_max = 0;
                 ModalButton::Ok
             }
+            Some(ModalType::About) => ModalButton::Ok,
+            Some(ModalType::Help) => {
+                // Reset scroll state for help modal
+                self.help_scroll_offset = 0;
+                ModalButton::Ok
+            }
             Some(ModalType::Confirmation { .. }) => ModalButton::Confirm,
             Some(ModalType::Info { .. }) => ModalButton::Ok,
             None => ModalButton::Ok,
@@ -66,6 +75,8 @@ impl ModalManager {
             self.active_button = match next {
                 ModalType::ConnectionError { .. } => ModalButton::Retry,
                 ModalType::ProcessDetails { .. } => ModalButton::Ok,
+                ModalType::About => ModalButton::Ok,
+                ModalType::Help => ModalButton::Ok,
                 ModalType::Confirmation { .. } => ModalButton::Confirm,
                 ModalType::Info { .. } => ModalButton::Ok,
             };
@@ -192,6 +203,22 @@ impl ModalManager {
                     ModalAction::None
                 }
             }
+            KeyCode::Up => {
+                if matches!(self.stack.last(), Some(ModalType::Help)) {
+                    self.help_scroll_offset = self.help_scroll_offset.saturating_sub(1);
+                    ModalAction::Handled
+                } else {
+                    ModalAction::None
+                }
+            }
+            KeyCode::Down => {
+                if matches!(self.stack.last(), Some(ModalType::Help)) {
+                    self.help_scroll_offset = self.help_scroll_offset.saturating_add(1);
+                    ModalAction::Handled
+                } else {
+                    ModalAction::None
+                }
+            }
             _ => ModalAction::None,
         }
     }
@@ -205,6 +232,14 @@ impl ModalManager {
                 self.pop_modal();
                 ModalAction::Dismiss
             }
+            (Some(ModalType::About), ModalButton::Ok) => {
+                self.pop_modal();
+                ModalAction::Dismiss
+            }
+            (Some(ModalType::Help), ModalButton::Ok) => {
+                self.pop_modal();
+                ModalAction::Dismiss
+            }
             (Some(ModalType::Confirmation { .. }), ModalButton::Confirm) => ModalAction::Confirm,
             (Some(ModalType::Confirmation { .. }), ModalButton::Cancel) => ModalAction::Cancel,
             (Some(ModalType::Info { .. }), ModalButton::Ok) => {
@@ -253,6 +288,14 @@ impl ModalManager {
                 // Process details modal uses almost full screen (95% width, 90% height)
                 self.centered_rect(95, 90, area)
             }
+            ModalType::About => {
+                // About modal uses medium size
+                self.centered_rect(90, 90, area)
+            }
+            ModalType::Help => {
+                // Help modal uses medium size
+                self.centered_rect(70, 80, area)
+            }
             _ => {
                 // Other modals use smaller size
                 self.centered_rect(70, 50, area)
@@ -276,6 +319,8 @@ impl ModalManager {
             ModalType::ProcessDetails { pid } => {
                 self.render_process_details(f, modal_area, *pid, data)
             }
+            ModalType::About => self.render_about(f, modal_area),
+            ModalType::Help => self.render_help(f, modal_area),
             ModalType::Confirmation {
                 title,
                 message,
@@ -378,6 +423,196 @@ impl ModalManager {
         );
     }
 
+    fn render_about(&self, f: &mut Frame, area: Rect) {
+        //get ASCII art from a constant stored in theme.rs
+        use super::theme::ASCII_ART;
+
+        let version = env!("CARGO_PKG_VERSION");
+
+        let about_text = format!(
+            "{}\n\
+            Version {}\n\
+            \n\
+            A terminal first remote monitoring tool\n\
+            \n\
+            Website: https://socktop.io\n\
+            GitHub: https://github.com/jasonwitty/socktop\n\
+            \n\
+            License: MIT License\n\
+            \n\
+            Created by Jason Witty\n\
+            jasonpwitty+socktop@proton.me",
+            ASCII_ART, version
+        );
+
+        // Render the border block
+        let block = Block::default()
+            .title(" About socktop ")
+            .borders(Borders::ALL)
+            .style(Style::default().bg(Color::Black).fg(Color::DarkGray));
+        f.render_widget(block, area);
+
+        // Calculate inner area manually to avoid any parent styling
+        let inner_area = Rect {
+            x: area.x + 1,
+            y: area.y + 1,
+            width: area.width.saturating_sub(2),
+            height: area.height.saturating_sub(2), // Leave room for button at bottom
+        };
+
+        // Render content area with explicit black background
+        f.render_widget(
+            Paragraph::new(about_text)
+                .style(Style::default().fg(Color::Cyan).bg(Color::Black))
+                .alignment(Alignment::Center)
+                .wrap(Wrap { trim: false }),
+            inner_area,
+        );
+
+        // Button area
+        let button_area = Rect {
+            x: area.x + 1,
+            y: area.y + area.height.saturating_sub(2),
+            width: area.width.saturating_sub(2),
+            height: 1,
+        };
+
+        let ok_style = if self.active_button == ModalButton::Ok {
+            Style::default()
+                .bg(Color::Blue)
+                .fg(Color::White)
+                .add_modifier(Modifier::BOLD)
+        } else {
+            Style::default().fg(Color::Blue).bg(Color::Black)
+        };
+
+        f.render_widget(
+            Paragraph::new("[ Enter ] Close")
+                .style(ok_style)
+                .alignment(Alignment::Center),
+            button_area,
+        );
+    }
+
+    fn render_help(&self, f: &mut Frame, area: Rect) {
+        let help_lines = vec![
+            "GLOBAL",
+            "  q/Q/Esc ........ Quit  │  a/A ....... About  │  h/H ....... Help",
+            "",
+            "PROCESS LIST",
+            "  / .............. Start/edit fuzzy search",
+            "  c/C ............ Clear search filter",
+            "  ↑/↓ ............ Select/navigate processes",
+            "  Enter .......... Open Process Details",
+            "  x/X ............ Clear selection",
+            "  Click header ... Sort by column (CPU/Mem)",
+            "  Click row ...... Select process",
+            "",
+            "SEARCH MODE (after pressing /)",
+            "  Type ........... Enter search query (fuzzy match)",
+            "  ↑/↓ ............ Navigate results while typing",
+            "  Esc ............ Cancel search and clear filter",
+            "  Enter .......... Apply filter and select first result",
+            "",
+            "CPU PER-CORE",
+            "  ←/→ ............ Scroll cores  │  PgUp/PgDn ... Page up/down",
+            "  Home/End ....... Jump to first/last core",
+            "",
+            "PROCESS DETAILS MODAL",
+            "  x/X ............ Close modal (all parent modals)",
+            "  p/P ............ Navigate to parent process",
+            "  j/k ............ Scroll threads ↓/↑ (1 line)",
+            "  d/u ............ Scroll threads ↓/↑ (10 lines)",
+            "  [ / ] .......... Scroll journal ↑/↓",
+            "  Esc/Enter ...... Close modal",
+            "",
+            "MODAL NAVIGATION",
+            "  Tab/→ .......... Next button  │  Shift+Tab/← ... Previous button",
+            "  Enter .......... Confirm/OK    │  Esc ............ Cancel/Close",
+        ];
+
+        // Render the border block
+        let block = Block::default()
+            .title(" Hotkey Help (use ↑/↓ to scroll) ")
+            .borders(Borders::ALL)
+            .style(Style::default().bg(Color::Black).fg(Color::DarkGray));
+        f.render_widget(block, area);
+
+        // Split into content area and button area
+        let chunks = Layout::default()
+            .direction(Direction::Vertical)
+            .constraints([Constraint::Min(1), Constraint::Length(1)])
+            .split(Rect {
+                x: area.x + 1,
+                y: area.y + 1,
+                width: area.width.saturating_sub(2),
+                height: area.height.saturating_sub(2),
+            });
+
+        let content_area = chunks[0];
+        let button_area = chunks[1];
+
+        // Calculate visible window
+        let visible_height = content_area.height as usize;
+        let total_lines = help_lines.len();
+        let max_scroll = total_lines.saturating_sub(visible_height);
+        let scroll_offset = self.help_scroll_offset.min(max_scroll);
+
+        // Get visible lines
+        let visible_lines: Vec<Line> = help_lines
+            .iter()
+            .skip(scroll_offset)
+            .take(visible_height)
+            .map(|s| Line::from(*s))
+            .collect();
+
+        // Render scrollable content
+        f.render_widget(
+            Paragraph::new(visible_lines)
+                .style(Style::default().fg(Color::Cyan).bg(Color::Black))
+                .alignment(Alignment::Left),
+            content_area,
+        );
+
+        // Render scrollbar if needed
+        if total_lines > visible_height {
+            use ratatui::widgets::{Scrollbar, ScrollbarOrientation, ScrollbarState};
+
+            let scrollbar_area = Rect {
+                x: area.x + area.width.saturating_sub(2),
+                y: area.y + 1,
+                width: 1,
+                height: area.height.saturating_sub(2),
+            };
+
+            let mut scrollbar_state = ScrollbarState::new(max_scroll).position(scroll_offset);
+
+            let scrollbar = Scrollbar::new(ScrollbarOrientation::VerticalRight)
+                .begin_symbol(Some("↑"))
+                .end_symbol(Some("↓"))
+                .style(Style::default().fg(Color::DarkGray));
+
+            f.render_stateful_widget(scrollbar, scrollbar_area, &mut scrollbar_state);
+        }
+
+        // Button area
+        let ok_style = if self.active_button == ModalButton::Ok {
+            Style::default()
+                .bg(Color::Blue)
+                .fg(Color::White)
+                .add_modifier(Modifier::BOLD)
+        } else {
+            Style::default().fg(Color::Blue).bg(Color::Black)
+        };
+
+        f.render_widget(
+            Paragraph::new("[ Enter ] Close")
+                .style(ok_style)
+                .alignment(Alignment::Center),
+            button_area,
+        );
+    }
+
     fn centered_rect(&self, percent_x: u16, percent_y: u16, r: Rect) -> Rect {
         let vert = Layout::default()
             .direction(Direction::Vertical)

socktop/src/ui/modal_process.rs

@@ -16,6 +16,15 @@ use super::modal_format::{calculate_dynamic_y_max, format_uptime, normalize_cpu_
 use super::modal_types::{ProcessModalData, ScatterPlotParams};
 use super::theme::{MODAL_BG, MODAL_HINT_FG, PROCESS_DETAILS_ACCENT};
 
+/// Parameters for rendering memory and I/O graphs
+struct MemoryIoParams<'a> {
+    process: &'a socktop_connector::DetailedProcessInfo,
+    mem_history: &'a std::collections::VecDeque<u64>,
+    io_read_history: &'a std::collections::VecDeque<u64>,
+    io_write_history: &'a std::collections::VecDeque<u64>,
+    max_mem_bytes: u64,
+}
+
 impl ModalManager {
     pub(super) fn render_process_details(
         &mut self,
@@ -57,10 +66,13 @@ impl ModalManager {
             self.render_middle_row_with_metadata(
                 f,
                 main_chunks[1],
-                &details.process,
-                data.history.mem,
-                data.history.io_read,
-                data.history.io_write,
+                MemoryIoParams {
+                    process: &details.process,
+                    mem_history: data.history.mem,
+                    io_read_history: data.history.io_read,
+                    io_write_history: data.history.io_write,
+                    max_mem_bytes: data.max_mem_bytes,
+                },
             );
 
             // Bottom Row: Journal Events
@@ -169,22 +181,14 @@ impl ModalManager {
         f.render_widget(plot_block, area);
     }
 
-    fn render_memory_io_graphs(
-        &self,
-        f: &mut Frame,
-        area: Rect,
-        process: &socktop_connector::DetailedProcessInfo,
-        mem_history: &std::collections::VecDeque<u64>,
-        io_read_history: &std::collections::VecDeque<u64>,
-        io_write_history: &std::collections::VecDeque<u64>,
-    ) {
+    fn render_memory_io_graphs(&self, f: &mut Frame, area: Rect, params: MemoryIoParams) {
         let graphs_block = Block::default()
             .title("Memory & I/O")
             .borders(Borders::ALL)
             .padding(Padding::horizontal(1));
 
-        let mem_mb = process.mem_bytes as f64 / 1_048_576.0;
-        let virtual_mb = process.virtual_mem_bytes as f64 / 1_048_576.0;
+        let mem_mb = params.process.mem_bytes as f64 / 1_048_576.0;
+        let virtual_mb = params.process.virtual_mem_bytes as f64 / 1_048_576.0;
 
         let mut content_lines = vec![
             Line::from(vec![
@@ -198,8 +202,12 @@ impl ModalManager {
         ];
 
         // Add memory sparkline if we have history
-        if mem_history.len() >= 2 {
-            let mem_data: Vec<u64> = mem_history.iter().map(|&bytes| bytes / 1_048_576).collect(); // Convert to MB
+        if params.mem_history.len() >= 2 {
+            let mem_data: Vec<u64> = params
+                .mem_history
+                .iter()
+                .map(|&bytes| bytes / 1_048_576)
+                .collect(); // Convert to MB
             let max_mem = mem_data.iter().copied().max().unwrap_or(1).max(1);
 
             // Create mini sparkline using Unicode blocks
@@ -228,8 +236,23 @@ impl ModalManager {
             Span::raw(format!("{virtual_mb:.1} MB")),
         ]));
 
+        // Add max memory if we have tracked it
+        if params.max_mem_bytes > 0 {
+            let max_mb = params.max_mem_bytes as f64 / 1_048_576.0;
+            content_lines.push(Line::from(vec![
+                Span::styled(
+                    "  Max Memory: ",
+                    Style::default().add_modifier(Modifier::DIM),
+                ),
+                Span::styled(
+                    format!("{max_mb:.1} MB"),
+                    Style::default().fg(Color::Yellow),
+                ),
+            ]));
+        }
+
         // Add shared memory if available
-        if let Some(shared_bytes) = process.shared_mem_bytes {
+        if let Some(shared_bytes) = params.process.shared_mem_bytes {
             let shared_mb = shared_bytes as f64 / 1_048_576.0;
             content_lines.push(Line::from(vec![
                 Span::styled("  Shared: ", Style::default().add_modifier(Modifier::DIM)),
@@ -244,7 +267,7 @@ impl ModalManager {
         ]));
 
         // Add I/O stats if available
-        match (process.read_bytes, process.write_bytes) {
+        match (params.process.read_bytes, params.process.write_bytes) {
             (Some(read), Some(write)) => {
                 let read_mb = read as f64 / 1_048_576.0;
                 let write_mb = write as f64 / 1_048_576.0;
@@ -254,8 +277,9 @@ impl ModalManager {
                 ]));
 
                 // Add read I/O sparkline if we have history
-                if io_read_history.len() >= 2 {
-                    let read_data: Vec<u64> = io_read_history
+                if params.io_read_history.len() >= 2 {
+                    let read_data: Vec<u64> = params
+                        .io_read_history
                         .iter()
                         .map(|&bytes| bytes / 1_048_576)
                         .collect(); // Convert to MB
@@ -282,8 +306,9 @@ impl ModalManager {
                 ]));
 
                 // Add write I/O sparkline if we have history
-                if io_write_history.len() >= 2 {
-                    let write_data: Vec<u64> = io_write_history
+                if params.io_write_history.len() >= 2 {
+                    let write_data: Vec<u64> = params
+                        .io_write_history
                         .iter()
                         .map(|&bytes| bytes / 1_048_576)
                         .collect(); // Convert to MB
@@ -842,7 +867,7 @@ impl ModalManager {
             let total: f32 = cpu_history.iter().sum();
             normalize_cpu_usage(total / cpu_history.len() as f32, thread_count)
         };
-        let title = format!("📊 CPU avg: {avg_cpu:.1}% (now: {current_cpu:.1}%)");
+        let title = format!("CPU (now: {current_cpu:.1}% | {avg_cpu:.1}%)");
 
         // Similar to main CPU rendering but for process CPU
         if cpu_history.len() < 2 {
@@ -913,10 +938,7 @@ impl ModalManager {
         &mut self,
         f: &mut Frame,
         area: Rect,
-        process: &socktop_connector::DetailedProcessInfo,
-        mem_history: &std::collections::VecDeque<u64>,
-        io_read_history: &std::collections::VecDeque<u64>,
-        io_write_history: &std::collections::VecDeque<u64>,
+        params: MemoryIoParams,
     ) {
         // Split middle row: Memory/IO (30%) | Thread table (40%) | Command + Metadata (30%)
         let middle_chunks = Layout::default()
@@ -931,13 +953,16 @@ impl ModalManager {
         self.render_memory_io_graphs(
             f,
             middle_chunks[0],
-            process,
-            mem_history,
-            io_read_history,
-            io_write_history,
+            MemoryIoParams {
+                process: params.process,
+                mem_history: params.mem_history,
+                io_read_history: params.io_read_history,
+                io_write_history: params.io_write_history,
+                max_mem_bytes: params.max_mem_bytes,
+            },
         );
-        self.render_thread_table(f, middle_chunks[1], process);
-        self.render_command_and_metadata(f, middle_chunks[2], process);
+        self.render_thread_table(f, middle_chunks[1], params.process);
+        self.render_command_and_metadata(f, middle_chunks[2], params.process);
     }
 
     fn render_command_and_metadata(

socktop/src/ui/modal_types.rs

@@ -15,6 +15,7 @@ pub struct ProcessModalData<'a> {
     pub details: Option<&'a socktop_connector::ProcessMetricsResponse>,
     pub journal: Option<&'a socktop_connector::JournalResponse>,
     pub history: ProcessHistoryData<'a>,
+    pub max_mem_bytes: u64,
     pub unsupported: bool,
 }
 
@@ -38,6 +39,8 @@ pub enum ModalType {
     ProcessDetails {
         pid: u32,
     },
+    About,
+    Help,
     #[allow(dead_code)]
     Confirmation {
         title: String,

socktop/src/ui/processes.rs

@@ -18,6 +18,66 @@ use crate::ui::theme::{
 };
 use crate::ui::util::human;
 
+/// Simple fuzzy matching: returns true if all characters in needle appear in haystack in order (case-insensitive)
+fn fuzzy_match(haystack: &str, needle: &str) -> bool {
+    if needle.is_empty() {
+        return true;
+    }
+    let haystack_lower = haystack.to_lowercase();
+    let needle_lower = needle.to_lowercase();
+    let mut haystack_chars = haystack_lower.chars();
+
+    for needle_char in needle_lower.chars() {
+        if !haystack_chars.any(|c| c == needle_char) {
+            return false;
+        }
+    }
+    true
+}
+
+/// Get filtered and sorted process indices based on search query and sort order
+pub fn get_filtered_sorted_indices(
+    metrics: &Metrics,
+    search_query: &str,
+    sort_by: ProcSortBy,
+) -> Vec<usize> {
+    // Filter processes by search query (fuzzy match)
+    let mut filtered_idxs: Vec<usize> = if search_query.is_empty() {
+        (0..metrics.top_processes.len()).collect()
+    } else {
+        (0..metrics.top_processes.len())
+            .filter(|&i| fuzzy_match(&metrics.top_processes[i].name, search_query))
+            .collect()
+    };
+
+    // Sort filtered rows
+    match sort_by {
+        ProcSortBy::CpuDesc => filtered_idxs.sort_by(|&a, &b| {
+            let aa = metrics.top_processes[a].cpu_usage;
+            let bb = metrics.top_processes[b].cpu_usage;
+            bb.partial_cmp(&aa).unwrap_or(Ordering::Equal)
+        }),
+        ProcSortBy::MemDesc => filtered_idxs.sort_by(|&a, &b| {
+            let aa = metrics.top_processes[a].mem_bytes;
+            let bb = metrics.top_processes[b].mem_bytes;
+            bb.cmp(&aa)
+        }),
+    }
+
+    filtered_idxs
+}
+
+/// Parameters for drawing the top processes table
+pub struct ProcessDisplayParams<'a> {
+    pub metrics: Option<&'a Metrics>,
+    pub scroll_offset: usize,
+    pub sort_by: ProcSortBy,
+    pub selected_process_pid: Option<u32>,
+    pub selected_process_index: Option<usize>,
+    pub search_query: &'a str,
+    pub search_active: bool,
+}
+
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Default)]
 pub enum ProcSortBy {
     #[default]
@@ -34,30 +94,61 @@ const COLS: [Constraint; 5] = [
     Constraint::Length(8),      // Mem %
 ];
 
-pub fn draw_top_processes(
-    f: &mut ratatui::Frame<'_>,
-    area: Rect,
-    m: Option<&Metrics>,
-    scroll_offset: usize,
-    sort_by: ProcSortBy,
-    selected_process_pid: Option<u32>,
-    selected_process_index: Option<usize>,
-) {
+pub fn draw_top_processes(f: &mut ratatui::Frame<'_>, area: Rect, params: ProcessDisplayParams) {
     // Draw outer block and title
-    let Some(mm) = m else { return };
+    let Some(mm) = params.metrics else { return };
     let total = mm.process_count.unwrap_or(mm.top_processes.len());
     let block = Block::default()
         .borders(Borders::ALL)
         .title(format!("Top Processes ({total} total)"));
     f.render_widget(block, area);
 
-    // Inner area and content area (reserve 2 columns for scrollbar)
+    // Inner area (reserve space for search box if active)
     let inner = Rect {
         x: area.x + 1,
         y: area.y + 1,
         width: area.width.saturating_sub(2),
         height: area.height.saturating_sub(2),
     };
+
+    // Draw search box if active
+    let content_start_y = if params.search_active || !params.search_query.is_empty() {
+        let search_area = Rect {
+            x: inner.x,
+            y: inner.y,
+            width: inner.width,
+            height: 3, // Height for border + content
+        };
+
+        let search_text = if params.search_active {
+            format!("Search: {}_", params.search_query)
+        } else {
+            format!(
+                "Filter: {} (press / to edit, c to clear)",
+                params.search_query
+            )
+        };
+
+        let search_block = Block::default()
+            .borders(Borders::ALL)
+            .border_style(Style::default().fg(Color::Yellow));
+        let search_paragraph = Paragraph::new(search_text)
+            .block(search_block)
+            .style(Style::default().fg(Color::Yellow));
+        f.render_widget(search_paragraph, search_area);
+
+        inner.y + 3
+    } else {
+        inner.y
+    };
+
+    // Content area (reserve 2 columns for scrollbar)
+    let inner = Rect {
+        x: inner.x,
+        y: content_start_y,
+        width: inner.width,
+        height: inner.height.saturating_sub(content_start_y - (area.y + 1)),
+    };
     if inner.height < 1 || inner.width < 3 {
         return;
     }
@@ -68,27 +159,15 @@ pub fn draw_top_processes(
         height: inner.height,
     };
 
-    // Sort rows (by CPU% or Mem bytes), descending.
-    let mut idxs: Vec<usize> = (0..mm.top_processes.len()).collect();
-    match sort_by {
-        ProcSortBy::CpuDesc => idxs.sort_by(|&a, &b| {
-            let aa = mm.top_processes[a].cpu_usage;
-            let bb = mm.top_processes[b].cpu_usage;
-            bb.partial_cmp(&aa).unwrap_or(Ordering::Equal)
-        }),
-        ProcSortBy::MemDesc => idxs.sort_by(|&a, &b| {
-            let aa = mm.top_processes[a].mem_bytes;
-            let bb = mm.top_processes[b].mem_bytes;
-            bb.cmp(&aa)
-        }),
-    }
+    // Get filtered and sorted indices
+    let idxs = get_filtered_sorted_indices(mm, params.search_query, params.sort_by);
 
     // Scrolling
     let total_rows = idxs.len();
     let header_rows = 1usize;
     let viewport_rows = content.height.saturating_sub(header_rows as u16) as usize;
     let max_off = total_rows.saturating_sub(viewport_rows);
-    let offset = scroll_offset.min(max_off);
+    let offset = params.scroll_offset.min(max_off);
     let show_n = total_rows.saturating_sub(offset).min(viewport_rows);
 
     // Build visible rows
@@ -122,9 +201,9 @@ pub fn draw_top_processes(
         };
 
         // Check if this process is selected - prioritize PID matching
-        let is_selected = if let Some(selected_pid) = selected_process_pid {
+        let is_selected = if let Some(selected_pid) = params.selected_process_pid {
             selected_pid == p.pid
-        } else if let Some(selected_idx) = selected_process_index {
+        } else if let Some(selected_idx) = params.selected_process_index {
             selected_idx == ix // ix is the absolute index in the sorted list
         } else {
             false
@@ -153,11 +232,11 @@ pub fn draw_top_processes(
     });
 
     // Header with sort indicator
-    let cpu_hdr = match sort_by {
+    let cpu_hdr = match params.sort_by {
         ProcSortBy::CpuDesc => "CPU % •",
         _ => "CPU %",
     };
-    let mem_hdr = match sort_by {
+    let mem_hdr = match params.sort_by {
         ProcSortBy::MemDesc => "Mem •",
         _ => "Mem",
     };
@@ -174,9 +253,9 @@ pub fn draw_top_processes(
     f.render_widget(table, content);
 
     // Draw tooltip if a process is selected
-    if let Some(selected_pid) = selected_process_pid {
+    if let Some(selected_pid) = params.selected_process_pid {
         // Find the selected process to get its name
-        let process_info = if let Some(metrics) = m {
+        let process_info = if let Some(metrics) = params.metrics {
             metrics
                 .top_processes
                 .iter()
@@ -254,6 +333,16 @@ fn fmt_cpu_pct(v: f32) -> String {
 }
 
 /// Handle keyboard scrolling (Up/Down/PageUp/PageDown/Home/End)
+/// Parameters for process key event handling
+pub struct ProcessKeyParams<'a> {
+    pub selected_process_pid: &'a mut Option<u32>,
+    pub selected_process_index: &'a mut Option<usize>,
+    pub key: crossterm::event::KeyEvent,
+    pub metrics: Option<&'a Metrics>,
+    pub sort_by: ProcSortBy,
+    pub search_query: &'a str,
+}
+
 /// LEGACY: Use processes_handle_key_with_selection for enhanced functionality
 #[allow(dead_code)]
 pub fn processes_handle_key(
@@ -264,24 +353,85 @@ pub fn processes_handle_key(
     crate::ui::cpu::per_core_handle_key(scroll_offset, key, page_size);
 }
 
-/// Enhanced keyboard handler that also manages process selection
-pub fn processes_handle_key_with_selection(
-    _scroll_offset: &mut usize,
-    selected_process_pid: &mut Option<u32>,
-    selected_process_index: &mut Option<usize>,
-    key: crossterm::event::KeyEvent,
-    _page_size: usize,
-    _total_rows: usize,
-    _metrics: Option<&Metrics>,
-) -> bool {
+pub fn processes_handle_key_with_selection(params: ProcessKeyParams) -> bool {
     use crossterm::event::KeyCode;
 
-    match key.code {
+    match params.key.code {
+        KeyCode::Up => {
+            // Navigate through filtered and sorted results
+            if let Some(m) = params.metrics {
+                let idxs = get_filtered_sorted_indices(m, params.search_query, params.sort_by);
+
+                if idxs.is_empty() {
+                    // No filtered results, clear selection
+                    *params.selected_process_index = None;
+                    *params.selected_process_pid = None;
+                } else if params.selected_process_index.is_none()
+                    || params.selected_process_pid.is_none()
+                {
+                    // No selection - select the first process in filtered/sorted order
+                    let first_idx = idxs[0];
+                    *params.selected_process_index = Some(first_idx);
+                    *params.selected_process_pid = Some(m.top_processes[first_idx].pid);
+                } else if let Some(current_idx) = *params.selected_process_index {
+                    // Find current position in filtered/sorted list
+                    if let Some(pos) = idxs.iter().position(|&idx| idx == current_idx) {
+                        if pos > 0 {
+                            // Move up in filtered/sorted list
+                            let new_idx = idxs[pos - 1];
+                            *params.selected_process_index = Some(new_idx);
+                            *params.selected_process_pid = Some(m.top_processes[new_idx].pid);
+                        }
+                    } else {
+                        // Current selection not in filtered list, select first result
+                        let first_idx = idxs[0];
+                        *params.selected_process_index = Some(first_idx);
+                        *params.selected_process_pid = Some(m.top_processes[first_idx].pid);
+                    }
+                }
+            }
+            true // Handled
+        }
+        KeyCode::Down => {
+            // Navigate through filtered and sorted results
+            if let Some(m) = params.metrics {
+                let idxs = get_filtered_sorted_indices(m, params.search_query, params.sort_by);
+
+                if idxs.is_empty() {
+                    // No filtered results, clear selection
+                    *params.selected_process_index = None;
+                    *params.selected_process_pid = None;
+                } else if params.selected_process_index.is_none()
+                    || params.selected_process_pid.is_none()
+                {
+                    // No selection - select the first process in filtered/sorted order
+                    let first_idx = idxs[0];
+                    *params.selected_process_index = Some(first_idx);
+                    *params.selected_process_pid = Some(m.top_processes[first_idx].pid);
+                } else if let Some(current_idx) = *params.selected_process_index {
+                    // Find current position in filtered/sorted list
+                    if let Some(pos) = idxs.iter().position(|&idx| idx == current_idx) {
+                        if pos + 1 < idxs.len() {
+                            // Move down in filtered/sorted list
+                            let new_idx = idxs[pos + 1];
+                            *params.selected_process_index = Some(new_idx);
+                            *params.selected_process_pid = Some(m.top_processes[new_idx].pid);
+                        }
+                    } else {
+                        // Current selection not in filtered list, select first result
+                        let first_idx = idxs[0];
+                        *params.selected_process_index = Some(first_idx);
+                        *params.selected_process_pid = Some(m.top_processes[first_idx].pid);
+                    }
+                }
+            }
+            true // Handled
+        }
         KeyCode::Char('x') | KeyCode::Char('X') => {
             // Unselect any selected process
-            if selected_process_pid.is_some() || selected_process_index.is_some() {
-                *selected_process_pid = None;
-                *selected_process_index = None;
+            if params.selected_process_pid.is_some() || params.selected_process_index.is_some() {
+                *params.selected_process_pid = None;
+                *params.selected_process_index = None;
                 true // Handled
             } else {
                 false // No selection to clear
@@ -289,7 +439,7 @@ pub fn processes_handle_key_with_selection(
         }
         KeyCode::Enter => {
             // Signal that Enter was pressed with a selection
-            selected_process_pid.is_some() // Return true if we have a selection to handle
+            params.selected_process_pid.is_some() // Return true if we have a selection to handle
         }
         _ => {
             // No other keys handled - let scrollbar handle all navigation
@@ -377,6 +527,7 @@ pub struct ProcessMouseParams<'a> {
     pub total_rows: usize,
     pub metrics: Option<&'a Metrics>,
     pub sort_by: ProcSortBy,
+    pub search_query: &'a str,
 }
 
 /// Enhanced mouse handler that also manages process selection
@@ -392,11 +543,19 @@ pub fn processes_handle_mouse_with_selection(params: ProcessMouseParams) -> Opti
     if inner.height == 0 || inner.width <= 2 {
         return None;
     }
+
+    // Calculate content area - must match draw_top_processes exactly!
+    // If search is active or query exists, content starts after search box (3 lines)
+    let search_active = !params.search_query.is_empty();
+    let content_start_y = if search_active { inner.y + 3 } else { inner.y };
+
     let content = Rect {
         x: inner.x,
-        y: inner.y,
+        y: content_start_y,
         width: inner.width.saturating_sub(2),
-        height: inner.height,
+        height: inner
+            .height
+            .saturating_sub(if search_active { 3 } else { 0 }),
     };
 
     // Scrollbar interactions (click arrows/page/drag)
@@ -453,24 +612,12 @@ pub fn processes_handle_mouse_with_selection(params: ProcessMouseParams) -> Opti
     {
         let clicked_row = (params.mouse.row - data_start_row) as usize;
 
-        // Find the actual process using the same sorting logic as the drawing code
+        // Find the actual process using the same filtering/sorting logic as the drawing code
         if let Some(m) = params.metrics {
-            // Create the same sorted index array as in draw_top_processes
-            let mut idxs: Vec<usize> = (0..m.top_processes.len()).collect();
-            match params.sort_by {
-                ProcSortBy::CpuDesc => idxs.sort_by(|&a, &b| {
-                    let aa = m.top_processes[a].cpu_usage;
-                    let bb = m.top_processes[b].cpu_usage;
-                    bb.partial_cmp(&aa).unwrap_or(std::cmp::Ordering::Equal)
-                }),
-                ProcSortBy::MemDesc => idxs.sort_by(|&a, &b| {
-                    let aa = m.top_processes[a].mem_bytes;
-                    let bb = m.top_processes[b].mem_bytes;
-                    bb.cmp(&aa)
-                }),
-            }
+            // Use the same filtered and sorted indices as display
+            let idxs = get_filtered_sorted_indices(m, params.search_query, params.sort_by);
 
-            // Calculate which process was actually clicked based on sorted order
+            // Calculate which process was actually clicked based on filtered/sorted order
             let visible_process_position = *params.scroll_offset + clicked_row;
             if visible_process_position < idxs.len() {
                 let actual_process_index = idxs[visible_process_position];

socktop/src/ui/theme.rs

@@ -49,7 +49,7 @@ pub const ICON_COUNTDOWN_LABEL: &str = "⏰ Next auto retry: ";
 pub const BTN_RETRY_TEXT: &str = " 🔄 Retry ";
 pub const BTN_EXIT_TEXT: &str = " ❌ Exit ";
 
-// Large multi-line warning icon
+// warning icon
 pub const LARGE_ERROR_ICON: &[&str] = &[
     "           /\\           ",
     "          /  \\          ",
@@ -60,3 +60,29 @@ pub const LARGE_ERROR_ICON: &[&str] = &[
     "     /     !!     \\     ",
     "    /______________\\    ",
 ];
+
+//about logo
+pub const ASCII_ART: &str = r#"
+⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣀⣠⡄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
+⠀⠀⠀⠀⠀⠀⠀⠀⣀⣤⣶⣾⠿⠿⠛⠃⠀⠀⠀⠀⠀⣀⣀⣠⡄⠀⠀⠀⠀⠀
+⠀⠀⠀⠀⠀⠀⠀⠀⠘⠛⢉⣠⣴⣾⣿⠿⠆⢰⣾⡿⠿⠛⠛⠋⠁⠀⠀⠀⠀⠀
+⠀⠀⠀⠀⠀⠀⠀⠀⠀⠘⣿⠟⠋⣁⣤⣤⣶⠀⣠⣤⣶⣾⣿⣿⡿⠀⠀⠀⠀⠀
+⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣶⣿⣿⣿⣿⣿⡆⠘⠛⢉⣁⣤⣤⣤⡀⠀⠀⠀⠀
+⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢸⣿⣿⣿⣿⣿⣿⡀⢾⣿⣿⣿⣿⣿⡇⠀⠀⠀⠀
+⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣿⣿⣿⣿⣿⣿⣧⠈⢿⣿⣿⣿⣿⣷⠀⠀⠀⠀
+⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢸⣿⣿⣿⣿⣿⣿⣧⠈⢿⣿⣿⣿⣿⡄⠀⠀⠀
+⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣼⣿⣿⣿⣿⣿⠿⠋⣁⠀⢿⣿⣿⣿⣷⡀⠀⠀
+⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣠⣴⣿⣿⣿⣿⡟⢁⣴⣿⣿⡇⢸⣿⣿⡿⠟⠃⠀⠀
+⠀⠀⠀⠀⠀⠀⢀⣠⣴⣿⣿⣿⣿⣿⣿⡟⢀⣿⣿⣿⡟⢀⣾⠟⢁⣤⣶⣿⠀⠀
+⠀⠀⠀⠀⣠⣶⣿⣿⣿⣿⣿⣿⣿⣿⣿⡇⠸⡿⠟⢋⣠⣾⠃⣰⣿⣿⣿⡟⠀⠀
+⠀⠀⣴⣄⠙⣿⣿⣿⣿⣿⡿⠿⠛⠋⣉⣁⣤⣴⣶⣿⣿⣿⠀⣿⡿⠟⠋⠀⠀⠀
+⠀⠀⣿⣿⡆⠹⠟⠋⣁⣤⡄⢰⣿⠿⠟⠛⠋⠉⠉⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
+⠀⠀⠈⠉⠁⠀⠀⠀⠙⠛⠃⠈⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
+
+███████╗ ██████╗  ██████╗████████╗ ██████╗ ██████╗ 
+██╔════╝██╔═══██╗██╔════╝╚══██╔══╝██╔═══██╗██╔══██╗
+███████╗██║   ██║██║        ██║   ██║   ██║██████╔╝
+╚════██║██║   ██║██║        ██║   ██║   ██║██╔═══╝ 
+███████║╚██████╔╝╚██████╗   ██║   ╚██████╔╝██║     
+╚══════╝ ╚═════╝  ╚═════╝   ╚═╝    ╚═════╝ ╚═╝     
+"#;

socktop_agent/Cargo.toml

@@ -1,41 +1,68 @@
 [package]
 name = "socktop_agent"
-version = "1.40.70"
+version = "1.50.2"
 authors = ["Jason Witty <jasonpwitty+socktop@proton.me>"]
 description = "Socktop agent daemon. Serves host metrics over WebSocket."
 edition = "2024"
 license = "MIT"
 readme = "README.md"
+homepage = "https://github.com/jasonwitty/socktop"
+repository = "https://github.com/jasonwitty/socktop"
 
 [dependencies]
-tokio = { version = "1", features = ["full"] }
+# Tokio: Use minimal features instead of "full" to reduce binary size
+# Only include: rt-multi-thread (async runtime), net (WebSocket), sync (Mutex/RwLock), macros (#[tokio::test])
+# Excluded: io, fs, process, signal, time (not needed for this workload)
+# Savings: ~200-300KB binary size, faster compile times
+tokio = { version = "1", features = ["rt-multi-thread", "net", "sync", "macros"] }
 axum = { version = "0.7", features = ["ws", "macros"] }
 sysinfo = { version = "0.37", features = ["network", "disk", "component"] }
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 flate2 = { version = "1", default-features = false, features = ["rust_backend"] }
 futures-util = "0.3.31"
-tracing = "0.1"
-tracing-subscriber = { version = "0.3", features = ["env-filter"] }
-# nvml-wrapper removed (unused; GPU metrics via gfxinfo only now)
-gfxinfo = "0.1.2"
+tracing = { version = "0.1", optional = true }
+tracing-subscriber = { version = "0.3", features = ["env-filter"], optional = true }
+gfxinfo = { version = "0.1.2", optional = true }
 once_cell = "1.19"
-axum-server = { version = "0.6", features = ["tls-rustls"] }
-rustls = "0.23"
+axum-server = { version = "0.7", features = ["tls-rustls"] }
+rustls = { version = "0.23", features = ["aws-lc-rs"] }
 rustls-pemfile = "2.1"
-rcgen = "0.13"  # pure-Rust self-signed cert generation (replaces openssl vendored build)
+rcgen = "0.13"
 anyhow = "1"
 hostname = "0.3"
 prost = { workspace = true }
 time = { version = "0.3", default-features = false, features = ["formatting", "macros", "parsing" ] }
-# For executing journalctl commands
-tokio-process = "0.2"
+
+[features]
+default = ["gpu"]
+gpu = ["gfxinfo"]
+logging = ["tracing", "tracing-subscriber"]
 
 [build-dependencies]
 prost-build = "0.13"
 tonic-build = { version = "0.12", default-features = false, optional = true }
 protoc-bin-vendored = "3"
+
 [dev-dependencies]
 assert_cmd = "2.0"
 tempfile = "3.10"
 tokio-tungstenite = "0.21"
+
+[package.metadata.deb]
+maintainer = "Jason Witty <jasonpwitty+socktop@proton.me>"
+copyright = "2024, Jason Witty <jasonpwitty+socktop@proton.me>"
+license-file = ["../LICENSE", "4"]
+extended-description = """\
+socktop_agent is the daemon component that runs on remote hosts to collect \
+and serve system metrics over WebSocket. It gathers CPU, memory, disk, network, \
+GPU, and process information that can be monitored remotely by the socktop TUI client."""
+depends = "$auto"
+section = "admin"
+priority = "optional"
+assets = [
+    ["target/release/socktop_agent", "usr/bin/", "755"],
+    ["../README.md", "usr/share/doc/socktop_agent/", "644"],
+]
+maintainer-scripts = "debian/"
+systemd-units = { unit-name = "socktop-agent", unit-scripts = ".", enable = false }

socktop_agent/debian/postinst

@@ -0,0 +1,57 @@
+#!/bin/sh
+set -e
+
+# Create socktop user and group if they don't exist
+if ! getent group socktop >/dev/null; then
+    addgroup --system socktop
+fi
+
+if ! getent passwd socktop >/dev/null; then
+    adduser --system --ingroup socktop --home /var/lib/socktop \
+            --no-create-home --disabled-password --disabled-login \
+            --gecos "Socktop Agent" socktop
+fi
+
+# Create state directory
+mkdir -p /var/lib/socktop
+chown socktop:socktop /var/lib/socktop
+chmod 755 /var/lib/socktop
+
+# Create config directory if it doesn't exist
+mkdir -p /etc/socktop
+chmod 755 /etc/socktop
+
+#DEBHELPER#
+
+# Print helpful message to the user
+cat <<EOF
+
+┌─────────────────────────────────────────────────────────────────────┐
+│ socktop-agent has been installed successfully!                      │
+├─────────────────────────────────────────────────────────────────────┤
+│                                                                      │
+│ The systemd service has been installed but is NOT enabled by        │
+│ default. To enable and start the service:                           │
+│                                                                      │
+│   sudo systemctl enable --now socktop-agent                         │
+│                                                                      │
+│ To start without enabling on boot:                                  │
+│                                                                      │
+│   sudo systemctl start socktop-agent                                │
+│                                                                      │
+│ To check service status:                                            │
+│                                                                      │
+│   sudo systemctl status socktop-agent                               │
+│                                                                      │
+│ Default settings:                                                   │
+│   - Port: 3000 (use -p or --port to change)                        │
+│   - SSL/TLS: disabled (use --enableSSL to enable)                  │
+│                                                                      │
+│ For more information, see:                                          │
+│   /usr/share/doc/socktop_agent/README.md                            │
+│                                                                      │
+└─────────────────────────────────────────────────────────────────────┘
+
+EOF
+
+exit 0

socktop_agent/debian/postrm

@@ -0,0 +1,34 @@
+#!/bin/sh
+set -e
+
+case "$1" in
+    purge)
+        # Remove user and group on purge
+        if getent passwd socktop >/dev/null; then
+            deluser --quiet socktop || true
+        fi
+
+        if getent group socktop >/dev/null; then
+            delgroup --quiet socktop || true
+        fi
+
+        # Remove state directory on purge
+        rm -rf /var/lib/socktop
+
+        # Remove config directory if empty
+        rmdir --ignore-fail-on-non-empty /etc/socktop 2>/dev/null || true
+        ;;
+
+    remove|upgrade|failed-upgrade|abort-install|abort-upgrade|disappear)
+        # Do nothing on remove/upgrade
+        ;;
+
+    *)
+        echo "postrm called with unknown argument \`$1'" >&2
+        exit 1
+        ;;
+esac
+
+#DEBHELPER#
+
+exit 0

socktop_agent/socktop-agent.service

@@ -0,0 +1,27 @@
+[Unit]
+Description=Socktop Agent - Remote System Monitor
+Documentation=https://github.com/jasonwitty/socktop
+After=network-online.target
+Wants=network-online.target
+
+[Service]
+Type=simple
+ExecStart=/usr/bin/socktop_agent --port 3000
+Environment=RUST_LOG=info
+# Optional authentication token:
+# Environment=SOCKTOP_TOKEN=changeme
+Restart=on-failure
+RestartSec=5
+User=socktop
+Group=socktop
+NoNewPrivileges=true
+
+# Security hardening
+PrivateTmp=true
+ProtectSystem=strict
+ProtectHome=true
+ReadWritePaths=/var/lib/socktop
+StateDirectory=socktop
+
+[Install]
+WantedBy=multi-user.target

socktop_agent/src/gpu.rs

@@ -1,4 +1,5 @@
 // gpu.rs
+#[cfg(feature = "gpu")]
 use gfxinfo::active_gpu;
 
 #[derive(Debug, Clone, serde::Serialize)]
@@ -9,6 +10,7 @@ pub struct GpuMetrics {
     pub mem_total_bytes: u64,
 }
 
+#[cfg(feature = "gpu")]
 pub fn collect_all_gpus() -> Result<Vec<GpuMetrics>, Box<dyn std::error::Error>> {
     let gpu = active_gpu()?; // Use ? to unwrap Result
     let info = gpu.info();
@@ -22,3 +24,9 @@ pub fn collect_all_gpus() -> Result<Vec<GpuMetrics>, Box<dyn std::error::Error>>
 
     Ok(vec![metrics])
 }
+
+#[cfg(not(feature = "gpu"))]
+pub fn collect_all_gpus() -> Result<Vec<GpuMetrics>, Box<dyn std::error::Error>> {
+    // GPU support not available on this platform
+    Ok(vec![])
+}

socktop_agent/src/main.rs

@@ -29,10 +29,53 @@ fn arg_value(name: &str) -> Option<String> {
     None
 }
 
-#[tokio::main]
-async fn main() -> anyhow::Result<()> {
+fn main() -> anyhow::Result<()> {
+    // Install rustls crypto provider before any TLS operations
+    // This is required when using axum-server's tls-rustls feature
+    rustls::crypto::aws_lc_rs::default_provider()
+        .install_default()
+        .ok(); // Ignore error if already installed
+
+    #[cfg(feature = "logging")]
     tracing_subscriber::fmt::init();
 
+    // Configure Tokio runtime with optimized thread pool for reduced overhead.
+    //
+    // The agent is primarily I/O-bound (WebSocket, /proc file reads, sysinfo)
+    // with no CPU-intensive or blocking operations, so a smaller thread pool
+    // is beneficial:
+    //
+    // Benefits:
+    //   - Lower memory footprint (~1-2MB per thread saved)
+    //   - Reduced context switching overhead
+    //   - Fewer idle threads consuming resources
+    //   - Better for resource-constrained systems
+    //
+    // Trade-offs:
+    //   - Slightly reduced throughput under very high concurrent connections
+    //   - Could introduce latency if blocking operations are added (don't do this!)
+    //
+    // Default: 2 threads (sufficient for typical workloads with 1-10 clients)
+    // Override: Set SOCKTOP_WORKER_THREADS=4 to use more threads if needed
+    //
+    // Note: Default Tokio uses num_cpus threads which is excessive for this workload.
+
+    let worker_threads = std::env::var("SOCKTOP_WORKER_THREADS")
+        .ok()
+        .and_then(|s| s.parse::<usize>().ok())
+        .unwrap_or(2)
+        .clamp(1, 16); // Ensure 1-16 threads
+
+    let runtime = tokio::runtime::Builder::new_multi_thread()
+        .worker_threads(worker_threads)
+        .thread_name("socktop-agent")
+        .enable_all()
+        .build()?;
+
+    runtime.block_on(async_main())
+}
+
+async fn async_main() -> anyhow::Result<()> {
     // Version flag (print and exit). Keep before heavy initialization.
     if arg_flag("--version") || arg_flag("-V") {
         println!("socktop_agent {}", env!("CARGO_PKG_VERSION"));

socktop_agent/src/metrics.rs

@@ -18,6 +18,7 @@ use std::sync::Mutex;
 use std::time::Duration as StdDuration;
 use std::time::{Duration, Instant, SystemTime, UNIX_EPOCH};
 use sysinfo::{ProcessRefreshKind, ProcessesToUpdate};
+#[cfg(feature = "logging")]
 use tracing::warn;
 
 // NOTE: CPU normalization env removed; non-Linux now always reports per-process share (0..100) as given by sysinfo.
@@ -168,11 +169,12 @@ pub async fn collect_fast_metrics(state: &AppState) -> Metrics {
         }
     }
     let mut sys = state.sys.lock().await;
-    if let Err(e) = std::panic::catch_unwind(std::panic::AssertUnwindSafe(|| {
+    if let Err(_e) = std::panic::catch_unwind(std::panic::AssertUnwindSafe(|| {
         sys.refresh_cpu_usage();
         sys.refresh_memory();
     })) {
-        warn!("sysinfo selective refresh panicked: {e:?}");
+        #[cfg(feature = "logging")]
+        warn!("sysinfo selective refresh panicked: {_e:?}");
     }
 
     // Get or initialize hostname once
@@ -266,8 +268,9 @@ pub async fn collect_fast_metrics(state: &AppState) -> Metrics {
             let v = match collect_all_gpus() {
                 Ok(v) if !v.is_empty() => Some(v),
                 Ok(_) => None,
-                Err(e) => {
-                    warn!("gpu collection failed: {e}");
+                Err(_e) => {
+                    #[cfg(feature = "logging")]
+                    warn!("gpu collection failed: {_e}");
                     None
                 }
             };
@@ -348,6 +351,7 @@ pub async fn collect_disks(state: &AppState) -> Vec<DiskInfo> {
             if label.contains("composite")
                 && let Some(temp) = c.temperature()
             {
+                #[cfg(feature = "logging")]
                 tracing::debug!("Found Composite temp: {}°C", temp);
                 composite_temps.push(temp);
             }
@@ -357,9 +361,11 @@ pub async fn collect_disks(state: &AppState) -> Vec<DiskInfo> {
         let mut temps = std::collections::HashMap::new();
         for (idx, temp) in composite_temps.iter().enumerate() {
             let key = format!("nvme{}n1", idx);
+            #[cfg(feature = "logging")]
             tracing::debug!("Mapping {} -> {}°C", key, temp);
             temps.insert(key, *temp);
         }
+        #[cfg(feature = "logging")]
         tracing::debug!("Final disk_temps map: {:?}", temps);
         temps
     };
@@ -394,6 +400,7 @@ pub async fn collect_disks(state: &AppState) -> Vec<DiskInfo> {
             // Try to find temperature for this disk
             let temperature = disk_temps.iter().find_map(|(key, &temp)| {
                 if name.starts_with(key) {
+                    #[cfg(feature = "logging")]
                     tracing::debug!("Matched {} with key {} -> {}°C", name, key, temp);
                     Some(temp)
                 } else {
@@ -402,6 +409,7 @@ pub async fn collect_disks(state: &AppState) -> Vec<DiskInfo> {
             });
 
             if temperature.is_none() && !name.starts_with("loop") && !name.starts_with("ram") {
+                #[cfg(feature = "logging")]
                 tracing::debug!("No temperature found for disk: {}", name);
             }
 
@@ -752,6 +760,7 @@ pub async fn collect_processes_all(state: &AppState) -> ProcessesPayload {
             proc_cache
                 .names
                 .retain(|pid, _| sys.processes().contains_key(&sysinfo::Pid::from_u32(*pid)));
+            #[cfg(feature = "logging")]
             tracing::debug!(
                 "Cleaned up {} stale process names in {}ms",
                 proc_cache.names.capacity() - proc_cache.names.len(),

socktop_agent/tests/tls_cert_creation.rs

@@ -1,4 +1,3 @@
-use assert_cmd::prelude::*;
 use std::fs;
 use std::path::PathBuf;
 use std::process::Command;
@@ -17,7 +16,7 @@ fn generates_self_signed_cert_and_key_in_xdg_path() {
     let xdg = tmpdir.path().to_path_buf();
 
     // Run the agent once with --enableSSL, short timeout so it exits quickly when killed
-    let mut cmd = Command::cargo_bin("socktop_agent").expect("binary exists");
+    let mut cmd = Command::new(assert_cmd::cargo::cargo_bin!("socktop_agent"));
     // Bind to an ephemeral port (-p 0) to avoid conflicts/flakes
     cmd.env("XDG_CONFIG_HOME", &xdg)
         .arg("--enableSSL")

socktop_connector/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "socktop_connector"
-version = "0.1.6"
+version = "1.50.0"
 edition = "2024"
 license = "MIT"
 description = "WebSocket connector library for socktop agent communication"