Add daemon-backed Pi npm plugin

.github/workflows/ci.yml

@@ -27,6 +27,10 @@ jobs:
         uses: oven-sh/setup-bun@0c5077e51419868618aeaa5fe8019c62421857d6 # v2
         with:
           bun-version: 1.3.14
+      - name: Set up pinned pnpm
+        uses: pnpm/action-setup@0ebf47130e4866e96fce0953f49152a61190b271 # v6.0.9
+        with:
+          version: 10.33.0
       - name: Build and validate plugins
         run: make test
 
@@ -76,6 +80,46 @@ jobs:
           node -e 'import(process.argv[1]).then((m) => { if (typeof m.default !== "function") process.exit(1) })' \
             "$PWD/install-test/node_modules/@braintrust/trace-opencode/dist/index.js"
 
+  resolve-pi-compatibility:
+    name: Resolve Pi compatibility window
+    runs-on: ubuntu-24.04
+    timeout-minutes: 10
+    outputs:
+      versions: ${{ steps.versions.outputs.versions }}
+    steps:
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
+      - id: versions
+        name: Resolve latest patch from five Pi minor lines
+        env:
+          PI_VERSION_COUNT: 5
+        run: node src/plugins/pi/content/scripts/resolve-pi-versions.mjs
+
+  pi-compatibility:
+    name: Pi package (${{ matrix.pi-target.version }})
+    needs: resolve-pi-compatibility
+    strategy:
+      fail-fast: false
+      matrix:
+        pi-target: ${{ fromJson(needs.resolve-pi-compatibility.outputs.versions) }}
+    runs-on: ubuntu-24.04
+    timeout-minutes: 20
+    steps:
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
+      - name: Set up pinned pnpm
+        uses: pnpm/action-setup@0ebf47130e4866e96fce0953f49152a61190b271 # v6.0.9
+        with:
+          version: 10.33.0
+      - name: Build validated Pi tarball
+        run: make validate-pi
+      - name: Test resolved Pi compatibility target
+        run: |
+          mkdir pi-install-test
+          pnpm --dir pi-install-test add --lockfile=false \
+            "$PWD"/dist/pi/braintrust-pi-extension-*.tgz \
+            '${{ matrix.pi-target.piCodingAgentSpec }}'
+          node -e 'import(process.argv[1]).then((m) => { if (typeof m.default !== "function") process.exit(1) })' \
+            "$PWD/pi-install-test/node_modules/@braintrust/pi-extension/dist/index.mjs"
+
   daemon:
     name: Daemon (${{ matrix.os }})
     strategy:
@@ -98,18 +142,27 @@ jobs:
           rustup default stable
           rustup component add clippy rustfmt
       - name: Install latest coding agents
-        run: npm install --prefix "${{ runner.temp }}/coding-agents" --no-save --no-package-lock --no-audit --no-fund --cache "${{ runner.temp }}/npm-cache" @openai/codex@latest @anthropic-ai/claude-code@latest opencode-ai@latest
+        run: npm install --prefix "${{ runner.temp }}/coding-agents" --no-save --no-package-lock --no-audit --no-fund --cache "${{ runner.temp }}/npm-cache" @openai/codex@latest @anthropic-ai/claude-code@latest opencode-ai@latest @earendil-works/pi-coding-agent@latest
       - name: Set up pinned Bun
         uses: oven-sh/setup-bun@0c5077e51419868618aeaa5fe8019c62421857d6 # v2
         with:
           bun-version: 1.3.14
+      - name: Set up pinned pnpm
+        uses: pnpm/action-setup@0ebf47130e4866e96fce0953f49152a61190b271 # v6.0.9
+        with:
+          version: 10.33.0
       - name: Build OpenCode plugin for integration harness
         run: make build-opencode
+      - name: Build Pi extension for integration harness
+        run: make build-pi
+      - name: Install built Pi extension for integration harness
+        run: npm install --prefix "${{ runner.temp }}/pi-extension" --no-save --no-package-lock --no-audit --no-fund ./dist/pi/braintrust-pi-extension-*.tgz
       - name: Report coding-agent versions
         run: |
           npm exec --prefix "${{ runner.temp }}/coding-agents" -- codex --version
           npm exec --prefix "${{ runner.temp }}/coding-agents" -- claude --version
           npm exec --prefix "${{ runner.temp }}/coding-agents" -- opencode --version
+          npm exec --prefix "${{ runner.temp }}/coding-agents" -- pi --version
       - name: Check formatting
         if: runner.os == 'Linux'
         run: cargo fmt --manifest-path bt-daemon/Cargo.toml -- --check
@@ -124,6 +177,8 @@ jobs:
           CODEX_BIN: ${{ runner.temp }}/coding-agents/node_modules/.bin/codex${{ matrix.agent_suffix }}
           CLAUDE_BIN: ${{ runner.temp }}/coding-agents/node_modules/.bin/claude${{ matrix.agent_suffix }}
           OPENCODE_BIN: ${{ runner.temp }}/coding-agents/node_modules/.bin/opencode${{ matrix.agent_suffix }}
+          PI_BIN: ${{ runner.temp }}/coding-agents/node_modules/.bin/pi${{ matrix.agent_suffix }}
+          PI_EXTENSION_PATH: ${{ runner.temp }}/pi-extension/node_modules/@braintrust/pi-extension/dist/index.mjs
         run: cargo test --manifest-path bt-daemon/Cargo.toml --all-features --locked --test agent_integration -- --ignored --nocapture --test-threads=1
       - name: Lint daemon
         run: cargo clippy --manifest-path bt-daemon/Cargo.toml --all-targets --all-features --locked -- -D warnings

README.md

@@ -9,6 +9,7 @@ For further instructions, see the instructions for your desired coding agent
 | Claude Code | [braintrustdata/braintrust-claude-plugin](https://github.com/braintrustdata/braintrust-claude-plugin) |
 | Codex       | [braintrustdata/braintrust-codex-plugin](https://github.com/braintrustdata/braintrust-codex-plugin)   |
 | OpenCode    | npm: [`@braintrust/trace-opencode`](https://www.npmjs.com/package/@braintrust/trace-opencode) |
+| Pi          | npm: [`@braintrust/pi-extension`](https://www.npmjs.com/package/@braintrust/pi-extension) |
 
 ## Development & releasing
 

bt-daemon/docs/protocol.md

@@ -92,7 +92,7 @@ Result:
 {
   "protocol_version": 1,
   "daemon_version": "0.1.0",
-  "capabilities": { "sources": ["codex", "claude-code", "opencode", "debug"] }
+  "capabilities": { "sources": ["codex", "claude-code", "opencode", "pi", "debug"] }
 }
 ```
 If `protocol_version` is incompatible the daemon returns an application error;

bt-daemon/src/translate/mod.rs

@@ -12,11 +12,13 @@ mod codex;
 mod debug;
 mod git;
 mod opencode;
+mod pi;
 
 pub use claude::ClaudeTranslatorFactory;
 pub use codex::CodexTranslatorFactory;
 pub use debug::DebugTranslatorFactory;
 pub use opencode::OpenCodeTranslatorFactory;
+pub use pi::PiTranslatorFactory;
 
 use crate::wire::{Envelope, SessionConfig};
 use serde::{Deserialize, Serialize};
@@ -125,7 +127,8 @@ impl Registry {
         let git = Arc::new(git::GitMetadataCache::default());
         r.register(Box::new(ClaudeTranslatorFactory::new(git.clone())));
         r.register(Box::new(CodexTranslatorFactory::new(git.clone())));
-        r.register(Box::new(OpenCodeTranslatorFactory::new(git)));
+        r.register(Box::new(OpenCodeTranslatorFactory::new(git.clone())));
+        r.register(Box::new(PiTranslatorFactory::new(git)));
         r
     }