feat(workflows): add gh-aw intake automation workflows (phase 1)

Five agentic workflows compiled with gh-aw v0.81.6, per
docs/plans/gh-aw-intake-automation.md:

- pr-reviewer: lane-aware verdict-first first-pass review of same-repo
  PRs (opened/ready_for_review + /review), live comments and labels
- pr-reviewer-external: same review for fork PRs; comments staged for
  team audit during rollout, labels live
- backlog-sweeper: weekday sweep of the oldest unreviewed open PRs with
  evidence-based recommend-close labeling (staged comments, never closes)
- issue-triager: labels-only classification and routing of new issues
- team-digest: weekday Discord digest (merge-ready, review queue by
  lane, SLA breaches, close queue, unanswered external issues)

All run the Claude engine read-only under strict mode with writes
gated through safe-outputs, a 30-day stop-after dead-man switch, and
SHA-pinned actions/containers.

Author: pettinarip

.gitattributes

@@ -4,3 +4,5 @@ README.md linguist-documentation
 *.md linguist-generated=false
 *.md linguist-documentation=false
 *.md linguist-detectable=true
+
+.github/workflows/*.lock.yml linguist-generated=true merge=ours

.github/aw/actions-lock.json

@@ -0,0 +1,14 @@
+{
+  "entries": {
+    "github/gh-aw-actions/setup-cli@v0.81.6": {
+      "repo": "github/gh-aw-actions/setup-cli",
+      "version": "v0.81.6",
+      "sha": "ba6380cc6e5be5d21677bebe04d52fb48e3abec7"
+    },
+    "github/gh-aw-actions/setup@v0.81.6": {
+      "repo": "github/gh-aw-actions/setup",
+      "version": "v0.81.6",
+      "sha": "ba6380cc6e5be5d21677bebe04d52fb48e3abec7"
+    }
+  }
+}

.github/workflows/agentic_commands.yml

@@ -0,0 +1,70 @@
+# gh-aw-commands: {"payload_version":"v1","schema_version":"v1","compiler_version":"v0.81.6","commands":["review"],"workflows":["pr-reviewer"]}
+# Routing summary (sorted):
+#   slash commands:
+#     /review -> pr-reviewer [pull_request_comment] reaction=eyes
+#   labels:
+#     (none)
+# This file was automatically generated by gh-aw (v0.81.6). DO NOT EDIT. To debug this workflow, load the skill at https://github.com/github/gh-aw/blob/main/debug.md
+#
+#    ___                   _   _      
+#   / _ \                 | | (_)     
+#  | |_| | __ _  ___ _ __ | |_ _  ___ 
+#  |  _  |/ _` |/ _ \ '_ \| __| |/ __|
+#  | | | | (_| |  __/ | | | |_| | (__ 
+#  \_| |_/\__, |\___|_| |_|\__|_|\___|
+#          __/ |
+#  _    _ |___/ 
+# | |  | |                / _| |
+# | |  | | ___ _ __ _  __| |_| | _____      ____
+# | |/\| |/ _ \ '__| |/ /|  _| |/ _ \ \ /\ / / ___|
+# \  /\  / (_) | | | | ( | | | | (_) \ V  V /\__ \
+#  \/  \/ \___/|_| |_|\_\|_| |_|\___/ \_/\_/ |___/
+#
+#
+# To regenerate this workflow, run:
+#   gh aw compile
+# Not all edits will cause changes to this file.
+#
+# For more information: https://github.github.com/gh-aw/introduction/overview/
+#
+name: "Agentic Commands"
+
+on:
+  issue_comment:
+    types: [created, edited]
+
+permissions: {}
+
+jobs:
+  route:
+    runs-on: ubuntu-slim
+    timeout-minutes: 15
+    permissions:
+      actions: write
+      contents: read
+      issues: write
+      pull-requests: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+
+      - name: Setup Scripts
+        uses: github/gh-aw-actions/setup@v0.81.6
+        with:
+          destination: ${{ runner.temp }}/gh-aw/actions
+
+      - name: Route slash command
+        uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v9.0.0
+        env:
+          GH_AW_SLASH_ROUTING: '{"review":[{"workflow":"pr-reviewer","events":["pull_request_comment"],"ai_reaction":"eyes","status_comment":true}]}'
+          GH_AW_LABEL_ROUTING: '{}'
+          GH_AW_HELP_COMMANDS: '[{"command":"review","description":"Lane-aware, verdict-first first-pass review of same-repo pull requests","centralized":true,"decentralized":false,"source_file":"pr-reviewer"}]'
+          GH_AW_HELP_COMMAND_ENABLED: 'true'
+          GH_AW_SLASH_COMMAND_DOCS_URL: 'https://github.github.com/gh-aw/reference/command-triggers/'
+        with:
+          script: |
+            const { setupGlobals } = require('${{ runner.temp }}/gh-aw/actions/setup_globals.cjs');
+            setupGlobals(core, github, context, exec, io, getOctokit);
+            const { main } = require('${{ runner.temp }}/gh-aw/actions/route_slash_command.cjs');
+            await main();