fix(workflows): apply prompt-input pattern to remaining 5 workflows

After validating in pr-review.yml that the action's 'prompt:' input
(rather than --prompt-file in claude_args) is what triggers the agent
to actually run, propagate the same pattern to the other Claude-using
workflows:

- claude-on-failure.yml: failure-analysis.md
- pr-discovery.yml:      pr-discovery.md
- pr-ingestion.yml:      cherry-pick.md + cherry-pick-conflict-resolution.md
- release.yml:           release-notes.md
- nightly-rebase.yml:    resolve-rebase-conflict.md (direct CLI call —
                          the Claude CLI doesn't accept --prompt-file,
                          so use 'claude -p \"\$(cat <file>)\"' instead)

Each Claude action call is now preceded by a 'Load <name> prompt' step
that reads the .md prompt file into a step output, which feeds the
action's prompt: input.

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

Author: Claude (Initial Force WPF Bot)

.github/workflows/claude-on-failure.yml

@@ -92,13 +92,24 @@ jobs:
         env:
           GH_TOKEN: ${{ steps.app-token.outputs.token }}
 
+      - name: Load failure-analysis prompt
+        id: load-prompt
+        shell: bash
+        run: |
+          {
+            echo 'prompt<<__EOF_PROMPT__'
+            cat .if-fork/prompts/failure-analysis.md
+            echo
+            echo '__EOF_PROMPT__'
+          } >> "$GITHUB_OUTPUT"
+
       - name: Run failure analysis (Claude Sonnet)
         id: run-analysis
         uses: anthropics/claude-code-action@v1
         with:
           anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
+          prompt: ${{ steps.load-prompt.outputs.prompt }}
           claude_args: >-
-            --prompt-file .if-fork/prompts/failure-analysis.md
             --max-turns 8
             --model claude-sonnet-4-6
             --allowedTools Read,Bash,Grep,mcp__github__issue_write,mcp__github__search_issues

.github/workflows/nightly-rebase.yml

@@ -140,12 +140,14 @@ jobs:
                 break
               fi
 
-              # Use Claude to resolve conflicts
+              # Use Claude to resolve conflicts. The Claude CLI does not
+              # support --prompt-file directly; pass the prompt via -p.
+              PROMPT_TEXT="$(cat .if-fork/prompts/resolve-rebase-conflict.md)"
               CONFLICT_FILES="$CONFLICT_FILES" \
               CURRENT_BRANCH="$BRANCH" \
               ESCALATION_ISSUE_PATH="/tmp/rebase-escalation.md" \
               CONFIG_PATH=".if-fork/config.yaml" \
-              claude --prompt-file .if-fork/prompts/resolve-rebase-conflict.md \
+              claude -p "$PROMPT_TEXT" \
                 --max-turns 20 \
                 --model claude-sonnet-4-6 \
                 --allowedTools "Bash,Read,Edit,Grep" \

.github/workflows/pr-discovery.yml

@@ -54,14 +54,24 @@ jobs:
       # NOTE: The actual Claude action wiring (anthropics/claude-code-action) is implemented
       # in a separate bead. This step is a placeholder that calls the action in the same form
       # as the rest of the pipeline; CI will skip/fail gracefully until the action is wired.
+      - name: Load pr-discovery prompt
+        id: load-prompt
+        shell: bash
+        run: |
+          {
+            echo 'prompt<<__EOF_PROMPT__'
+            cat .if-fork/prompts/pr-discovery.md
+            echo
+            echo '__EOF_PROMPT__'
+          } >> "$GITHUB_OUTPUT"
+
       - name: Run discovery (Claude Haiku)
         id: run
-        # placeholder — replace with real action once claude-code-action bead lands
         uses: anthropics/claude-code-action@v1
         with:
           anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
+          prompt: ${{ steps.load-prompt.outputs.prompt }}
           claude_args: >-
-            --prompt-file .if-fork/prompts/pr-discovery.md
             --max-turns 8
             --model claude-haiku-4-5
             --allowedTools Bash,Read,Grep,mcp__github__list_pull_requests,mcp__github__search_pull_requests,mcp__github__issue_write

.github/workflows/pr-ingestion.yml

@@ -266,13 +266,24 @@ jobs:
           git checkout -b "${{ steps.set-branch.outputs.branch }}" if/staging || \
             git checkout "${{ steps.set-branch.outputs.branch }}"
 
+      - name: Load cherry-pick prompt
+        id: load-prompt-pick
+        shell: bash
+        run: |
+          {
+            echo 'prompt<<__EOF_PROMPT__'
+            cat .if-fork/prompts/cherry-pick.md
+            echo
+            echo '__EOF_PROMPT__'
+          } >> "$GITHUB_OUTPUT"
+
       - name: Run cherry-pick (Claude Sonnet)
         id: pick
         uses: anthropics/claude-code-action@v1
         with:
           anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
+          prompt: ${{ steps.load-prompt-pick.outputs.prompt }}
           claude_args: >-
-            --prompt-file .if-fork/prompts/cherry-pick.md
             --max-turns 15
             --model claude-sonnet-4-6
             --allowedTools Bash,Read,Edit,Grep,mcp__github__pull_request_read,mcp__github__get_file_contents,mcp__github__issue_write
@@ -283,13 +294,25 @@ jobs:
           PINNED_HEAD_SHA: ${{ env.PINNED_HEAD_SHA }}
           CHERRY_PICK_BRANCH: ${{ steps.set-branch.outputs.branch }}
 
+      - name: Load cherry-pick-conflict-resolution prompt
+        id: load-prompt-conflict
+        if: steps.pick.outcome == 'failure'
+        shell: bash
+        run: |
+          {
+            echo 'prompt<<__EOF_PROMPT__'
+            cat .if-fork/prompts/cherry-pick-conflict-resolution.md
+            echo
+            echo '__EOF_PROMPT__'
+          } >> "$GITHUB_OUTPUT"
+
       - name: Run conflict-resolution if cherry-pick failed
         if: steps.pick.outcome == 'failure'
         uses: anthropics/claude-code-action@v1
         with:
           anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
+          prompt: ${{ steps.load-prompt-conflict.outputs.prompt }}
           claude_args: >-
-            --prompt-file .if-fork/prompts/cherry-pick-conflict-resolution.md
             --max-turns 10
             --model claude-sonnet-4-6
             --allowedTools Bash,Read,Edit,Grep,mcp__github__issue_write

.github/workflows/release.yml

@@ -303,12 +303,23 @@ jobs:
           echo "Previous tag: $PREV_TAG"
         shell: bash
 
+      - name: Load release-notes prompt
+        id: load-prompt
+        shell: bash
+        run: |
+          {
+            echo 'prompt<<__EOF_PROMPT__'
+            cat .if-fork/prompts/release-notes.md
+            echo
+            echo '__EOF_PROMPT__'
+          } >> "$GITHUB_OUTPUT"
+
       - name: Run release notes prompt (Claude Sonnet)
         uses: anthropics/claude-code-action@v1
         with:
           anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
+          prompt: ${{ steps.load-prompt.outputs.prompt }}
           claude_args: >-
-            --prompt-file .if-fork/prompts/release-notes.md
             --max-turns 10
             --model claude-sonnet-4-6
             --allowedTools Bash,Read,Grep