Revert "Add scheduled trigger to update-copilot-dependency.yml"

This reverts commit a88c3eb.

The scheduled trigger was added to close a hands-off-loop gap that
was framed in terms of a downstream consumer's needs. On reflection,
the SDK should not be the only language in this repo with scheduled
auto-detect; that's a cross-language platform decision, not a single-
SDK one. Reverting brings update-copilot-dependency.yml back to
manual-only (workflow_dispatch with a required version input) — the
same shape as every other language's CLI update workflow in this
repo.

When the SDK collectively decides to add scheduled CLI tracking,
that should land as a unified change across all languages, not as a
Rust-only special case driven by a downstream consumer's automation
desires. Manual dispatch remains the supported path until then.

Conflict resolution: the e93ce8e ("Scrub github-app references")
commit landed after a88c3eb and rewrote the cron block's comment.
The revert drops the entire schedule: block (including the rewritten
comment), restoring the workflow to its pre-a88c3eb manual-only
shape exactly.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: tclem

.github/workflows/update-copilot-dependency.yml

@@ -1,73 +1,31 @@
 name: "Update @github/copilot Dependency"
 
 on:
-  schedule:
-    # Daily at 10:00 UTC — picks up new @github/copilot CLI releases
-    # within ~24h of publish, keeping the SDK's pinned CLI version
-    # current so the SDK regen advances in lockstep with each upstream
-    # publish. The detect job is cheap (one `npm view` + a jq read);
-    # the heavy update job only runs when the detected version actually
-    # differs from the current pin, so the daily schedule is
-    # effectively free on no-op days.
-    - cron: "0 10 * * *"
   workflow_dispatch:
     inputs:
       version:
-        description: 'Target version of @github/copilot (e.g. 0.0.420). Leave empty to auto-detect the latest published version.'
-        required: false
+        description: 'Target version of @github/copilot (e.g. 0.0.420)'
+        required: true
         type: string
 
 permissions:
   contents: write
   pull-requests: write
 
 jobs:
-  detect:
-    name: "Detect target version"
+  update:
+    name: "Update @github/copilot to ${{ inputs.version }}"
     runs-on: ubuntu-latest
-    outputs:
-      version: ${{ steps.resolve.outputs.version }}
-      should_continue: ${{ steps.resolve.outputs.should_continue }}
     steps:
-      - uses: actions/checkout@v4
-
-      - uses: actions/setup-node@v4
-        with:
-          node-version: 22
-
-      - name: Resolve target version
-        id: resolve
+      - name: Validate version input
         env:
-          INPUT_VERSION: ${{ inputs.version }}
+          VERSION: ${{ inputs.version }}
         run: |
-          if [ -n "$INPUT_VERSION" ]; then
-            TARGET="$INPUT_VERSION"
-            echo "Manual override: $TARGET"
-          else
-            TARGET=$(npm view @github/copilot version)
-            echo "Latest published @github/copilot: $TARGET"
-          fi
-          if [[ ! "$TARGET" =~ ^[0-9]+\.[0-9]+\.[0-9]+(-[a-zA-Z0-9._-]+)?$ ]]; then
-            echo "::error::Invalid version format '$TARGET'. Expected semver (e.g. 0.0.420)."
+          if [[ ! "$VERSION" =~ ^[0-9]+\.[0-9]+\.[0-9]+(-[a-zA-Z0-9._-]+)?$ ]]; then
+            echo "::error::Invalid version format '$VERSION'. Expected semver (e.g. 0.0.420)."
             exit 1
           fi
-          CURRENT=$(jq -r '.dependencies["@github/copilot"]' nodejs/package.json | sed 's/^[\^~]//')
-          echo "Current pinned: $CURRENT"
-          if [ "$TARGET" = "$CURRENT" ]; then
-            echo "Already on $TARGET; nothing to do."
-            echo "should_continue=false" >> "$GITHUB_OUTPUT"
-            exit 0
-          fi
-          echo "Will bump from $CURRENT to $TARGET"
-          echo "version=$TARGET" >> "$GITHUB_OUTPUT"
-          echo "should_continue=true" >> "$GITHUB_OUTPUT"
 
-  update:
-    name: "Update @github/copilot to ${{ needs.detect.outputs.version }}"
-    needs: detect
-    if: needs.detect.outputs.should_continue == 'true'
-    runs-on: ubuntu-latest
-    steps:
       - uses: actions/checkout@v4
 
       - uses: actions/setup-node@v4
@@ -100,13 +58,13 @@ jobs:
 
       - name: Update @github/copilot in nodejs
         env:
-          VERSION: ${{ needs.detect.outputs.version }}
+          VERSION: ${{ inputs.version }}
         working-directory: ./nodejs
         run: npm install "@github/copilot@$VERSION"
 
       - name: Update @github/copilot in test harness
         env:
-          VERSION: ${{ needs.detect.outputs.version }}
+          VERSION: ${{ inputs.version }}
         working-directory: ./test/harness
         run: npm install "@github/copilot@$VERSION"
 
@@ -131,7 +89,7 @@ jobs:
       - name: Create pull request
         env:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          VERSION: ${{ needs.detect.outputs.version }}
+          VERSION: ${{ inputs.version }}
         run: |
           BRANCH="update-copilot-$VERSION"
           git config user.name "github-actions[bot]"