fix(ci): pin dtolnay/rust-toolchain to 1.95.0 to match rust-toolchain.toml

The action was set to @stable, which installs whatever the latest
stable is (1.95.0 right now). Then maturin invokes cargo, which reads
rust-toolchain.toml and re-resolves to "1.95.0 + clippy + rustfmt".
rustup treats stable and 1.95.0 as distinct toolchain identities and
refuses the second install with:

  failed to install component 'clippy-preview-x86_64-unknown-linux-gnu',
  detected conflict: 'bin/cargo-clippy'

This was intermittent across the matrix (only test (3.10) tripped on
the most recent run; others got lucky on cache state). Pinning the
action ref to 1.95.0 makes both sides ask for the exact same toolchain
identity, so the second install is a no-op and the conflict can't fire.

Bump procedure stays the same: when rust-toolchain.toml's channel
changes, update these refs in lock-step.

Plugin manifests auto-bumped 0.11.0 -> 0.13.2 by sync-plugin-versions
hook (unrelated to the workflow fix).

.claude-plugin/marketplace.json

@@ -5,14 +5,14 @@
   },
   "metadata": {
     "description": "Headroom marketplace for Claude Code and GitHub Copilot CLI plugins.",
-    "version": "0.11.0"
+    "version": "0.13.2"
   },
   "plugins": [
     {
       "name": "headroom",
       "source": "./plugins/headroom-agent-hooks",
       "description": "Headroom startup hooks for Claude Code and GitHub Copilot CLI.",
-      "version": "0.11.0",
+      "version": "0.13.2",
       "author": {
         "name": "Headroom Contributors",
         "url": "https://github.com/chopratejas/headroom"

.github/plugin/marketplace.json

@@ -5,14 +5,14 @@
   },
   "metadata": {
     "description": "Headroom marketplace for Claude Code and GitHub Copilot CLI plugins.",
-    "version": "0.11.0"
+    "version": "0.13.2"
   },
   "plugins": [
     {
       "name": "headroom",
       "source": "./plugins/headroom-agent-hooks",
       "description": "Headroom startup hooks for Claude Code and GitHub Copilot CLI.",
-      "version": "0.11.0",
+      "version": "0.13.2",
       "author": {
         "name": "Headroom Contributors",
         "url": "https://github.com/chopratejas/headroom"

.github/workflows/ci.yml

@@ -44,7 +44,7 @@ jobs:
       # below runs `maturin develop` and symlinks the built `.so` into the
       # in-tree `headroom/` package so the editable install resolves it.
       - name: Install Rust toolchain
-        uses: dtolnay/rust-toolchain@stable
+        uses: dtolnay/rust-toolchain@1.95.0
 
       - name: Cache cargo registry + build
         uses: Swatinem/rust-cache@v2
@@ -130,7 +130,7 @@ jobs:
       # the editable install resolves it (same pattern as the main `test`
       # job above).
       - name: Install Rust toolchain
-        uses: dtolnay/rust-toolchain@stable
+        uses: dtolnay/rust-toolchain@1.95.0
 
       - name: Cache cargo registry + build
         uses: Swatinem/rust-cache@v2

.github/workflows/eval.yml

@@ -28,7 +28,7 @@ jobs:
       # Rust extension before running the smoke test or every call raises
       # `ModuleNotFoundError`. Mirrors the main CI `test` job pattern.
       - name: Install Rust toolchain
-        uses: dtolnay/rust-toolchain@stable
+        uses: dtolnay/rust-toolchain@1.95.0
 
       - name: Cache cargo registry + build
         uses: Swatinem/rust-cache@v2

.github/workflows/rust.yml

@@ -42,7 +42,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Install stable toolchain
-        uses: dtolnay/rust-toolchain@stable
+        uses: dtolnay/rust-toolchain@1.95.0
         with:
           components: rustfmt, clippy
       - name: Cache cargo registry + build
@@ -101,7 +101,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: dtolnay/rust-toolchain@stable
+      - uses: dtolnay/rust-toolchain@1.95.0
       - uses: Swatinem/rust-cache@v2
       - name: Install cargo-audit + cargo-deny
         run: |
@@ -121,7 +121,7 @@ jobs:
     continue-on-error: true
     steps:
       - uses: actions/checkout@v4
-      - uses: dtolnay/rust-toolchain@stable
+      - uses: dtolnay/rust-toolchain@1.95.0
       - uses: actions/setup-python@v5
         with:
           python-version: '3.11'

plugins/headroom-agent-hooks/.claude-plugin/plugin.json

@@ -1,6 +1,6 @@
 {
   "name": "headroom",
-  "version": "0.11.0",
+  "version": "0.13.2",
   "description": "Headroom startup hooks for Claude Code and GitHub Copilot CLI.",
   "author": {
     "name": "Headroom Contributors",

plugins/headroom-agent-hooks/.github/plugin/plugin.json

@@ -1,6 +1,6 @@
 {
   "name": "headroom",
-  "version": "0.11.0",
+  "version": "0.13.2",
   "description": "Headroom startup hooks for Claude Code and GitHub Copilot CLI.",
   "author": {
     "name": "Headroom Contributors",