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+name: Issue Agent
+
+# Autonomous issue worker. Fires on issue label changes, comments, and
+# closures; a cheap filter step decides whether to act, so Claude (and its
+# API cost) only runs on genuinely actionable events. See
+# tools/issue-agent/PROTOCOL.md for the agent's behaviour and safety rules.
+#
+# Required repo Actions secrets:
+#   ANTHROPIC_API_KEY  — Anthropic API key (billed per run).
+#   AGENT_GITEA_TOKEN  — the `developer` PAT (write:issue + repository) so the
+#                        agent comments/labels/opens PRs as `developer`.
+# Optional repo Actions variables:
+#   ISSUE_AGENT_MODEL  — model alias (default: opus).
+#   ISSUE_AGENT_EFFORT — effort level (default: max).
+
+on:
+  issues:
+    types: [labeled, closed]
+  issue_comment:
+    types: [created]
+
+concurrency:
+  group: issue-agent-${{ github.event.issue.number }}
+  cancel-in-progress: false
+
+jobs:
+  agent:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Decide whether to act
+        id: decide
+        env:
+          BOT: developer
+        run: |
+          set -euo pipefail
+          ev="$GITHUB_EVENT_PATH"
+          actor=$(jq -r '.sender.login // ""' "$ev")
+          action=$(jq -r '.action // ""' "$ev")
+          num=$(jq -r '.issue.number // ""' "$ev")
+          state=$(jq -r '.issue.state // ""' "$ev")
+          labels=$(jq -r '[.issue.labels[]?.name] | join(",")' "$ev")
+          assignees=$(jq -r '[.issue.assignees[]?.login] | join(",")' "$ev")
+          author=$(jq -r '.issue.user.login // ""' "$ev")
+          commenter=$(jq -r '.comment.user.login // ""' "$ev")
+          haslabel() { printf ',%s,' "$labels" | grep -q ",$1,"; }
+          isassigned() { printf ',%s,' "$assignees" | grep -q ",$BOT,"; }
+          go=false; mode=""
+          if [ "$actor" = "$BOT" ]; then
+            echo "self-action by $BOT — ignore (anti-loop)"
+          elif [ "$GITHUB_EVENT_NAME" = "issues" ] && [ "$state" = "closed" ] \
+               && printf '%s' "$labels" | grep -q 'claude/'; then
+            go=true; mode=cleanup
+          elif [ "$GITHUB_EVENT_NAME" = "issues" ] && [ "$state" = "open" ] \
+               && isassigned && haslabel ready && ! haslabel claude/working; then
+            go=true; mode=run
+          elif [ "$GITHUB_EVENT_NAME" = "issue_comment" ] && [ "$action" = "created" ] \
+               && [ "$state" = "open" ] && [ "$commenter" = "$author" ] \
+               && haslabel claude/blocked; then
+            go=true; mode=run
+          fi
+          {
+            echo "go=$go"
+            echo "mode=$mode"
+            echo "issue=$num"
+          } >> "$GITHUB_OUTPUT"
+          echo "event=$GITHUB_EVENT_NAME action=$action actor=$actor issue=$num go=$go mode=$mode"
+
+      - name: Checkout development
+        if: steps.decide.outputs.go == 'true' && steps.decide.outputs.mode == 'run'
+        uses: actions/checkout@v4
+        with:
+          ref: development
+          fetch-depth: 0
+          token: ${{ secrets.AGENT_GITEA_TOKEN }}
+
+      - name: Set up Node
+        if: steps.decide.outputs.go == 'true' && steps.decide.outputs.mode == 'run'
+        uses: actions/setup-node@v4
+        with:
+          node-version: 22
+
+      - name: Install Claude Code
+        if: steps.decide.outputs.go == 'true' && steps.decide.outputs.mode == 'run'
+        run: npm install -g @anthropic-ai/claude-code
+
+      - name: Run the issue agent
+        if: steps.decide.outputs.go == 'true' && steps.decide.outputs.mode == 'run'
+        env:
+          ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
+          GITEA_URL: ${{ github.server_url }}
+          GITEA_TOKEN: ${{ secrets.AGENT_GITEA_TOKEN }}
+          ISSUE: ${{ steps.decide.outputs.issue }}
+          MODEL: ${{ vars.ISSUE_AGENT_MODEL || 'opus' }}
+          EFFORT: ${{ vars.ISSUE_AGENT_EFFORT || 'max' }}
+        run: |
+          set -euo pipefail
+          git config user.name "developer"
+          git config user.email "developer@noreply.${GITEA_URL#https://}"
+          PROMPT="$(cat tools/issue-agent/PROTOCOL.md)
+
+          ---
+          Runtime: you are inside a Gitea Actions job (CI). The current
+          directory is a fresh checkout of origin/development — branch from
+          here and push with 'git push origin <branch>' (push credentials are
+          already configured). Open the PR via the Gitea API.
+
+          Override for this runtime: after opening the PR do NOT poll or wait
+          for CI — set claude/in-review, post your summary comment, and exit.
+          CI runs asynchronously and the owner merges on green.
+
+          Process Gitea issue #$ISSUE now."
+          claude -p "$PROMPT" \
+            --model "$MODEL" \
+            --effort "$EFFORT" \
+            --dangerously-skip-permissions
+
+      - name: Clean up a cancelled issue
+        if: steps.decide.outputs.go == 'true' && steps.decide.outputs.mode == 'cleanup'
+        env:
+          GITEA_URL: ${{ github.server_url }}
+          GITEA_TOKEN: ${{ secrets.AGENT_GITEA_TOKEN }}
+          ISSUE: ${{ steps.decide.outputs.issue }}
+        run: |
+          set -euo pipefail
+          API="$GITEA_URL/api/v1/repos/$GITHUB_REPOSITORY"
+          prefix="feature/issue-$ISSUE-"
+          msg=""
+          while read -r n ref; do
+            [ -z "$n" ] && continue
+            case "$ref" in
+              "$prefix"*)
+                curl -fsS -X PATCH -H "Authorization: token $GITEA_TOKEN" \
+                  -H 'Content-Type: application/json' \
+                  "$API/pulls/$n" -d '{"state":"closed"}' >/dev/null || true
+                curl -fsS -X DELETE -H "Authorization: token $GITEA_TOKEN" \
+                  "$API/branches/$ref" >/dev/null || true
+                msg="$msg PR #$n + branch \`$ref\`;"
+                ;;
+            esac
+          done < <(curl -fsS -H "Authorization: token $GITEA_TOKEN" \
+                     "$API/pulls?state=open&limit=50" \
+                   | jq -r '.[] | "\(.number) \(.head.ref)"')
+          if [ -n "$msg" ]; then
+            curl -fsS -X POST -H "Authorization: token $GITEA_TOKEN" \
+              -H 'Content-Type: application/json' "$API/issues/$ISSUE/comments" \
+              -d "$(jq -n --arg b "Issue cancelled — cleaned up:$msg" '{body:$b}')" >/dev/null
+            echo "cleaned up:$msg"
+          else
+            echo "nothing to clean up for #$ISSUE"
+          fi
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+# Issue Agent Protocol
+
+You are the autonomous issue worker for the **galaxy-game** repository,
+running headless (`claude -p`). You are the repo's `developer` user. Act as
+the same careful senior engineer as in interactive sessions, bound by the
+global `~/.claude/CLAUDE.md` and the project `CLAUDE.md` in the worktree.
+You are given exactly one Gitea issue number to process.
+
+Gitea API access is in the environment: `$GITEA_URL` and `$GITEA_TOKEN`.
+The repo is `developer/galaxy-game`
+(`$GITEA_URL/api/v1/repos/developer/galaxy-game`). Use it for every issue
+operation (read, comment, set labels, open PR) exactly as in chat.
+
+## Absolute safety rules — never violate
+
+1. **Never merge anything.** What you produce is, at most, a PR. A human
+   merges. Nothing you do reaches `development` or `main` without a human
+   merge click.
+2. **Never push to `main` or `development`.** Work only on a `feature/*`
+   branch and open a PR into `development`.
+3. **Stay strictly in the issue's scope.** Smallest correct diff. No
+   drive-by refactors, renames, or reformatting of unrelated code.
+4. **When in doubt, ask — never assume.** Any ambiguity, missing
+   requirement, design fork, or anything you cannot confirm from the code
+   is a STOP: post a question and set `claude/blocked`.
+5. **High-blast-radius areas always require a question first**, even when
+   they look obvious: auth/sessions, billing, persistence/migrations,
+   concurrency, public API/wire formats (`*.proto`, `openapi.yaml`), hot
+   paths, CI/CD, secrets, deploy/infra.
+6. **Confirm every hypothesis against the actual code** before changing
+   anything. No guessing.
+7. Honour the repo's docs-sync discipline, branching model, testing layers,
+   and conventions. If unsure what the repo expects, read its docs first.
+8. **Never create or close issues.** Issues are authored and triaged by the
+   human owner. You only read, comment on, and label them. The token can
+   technically create issues (Gitea bundles create/comment/label in one
+   `write:issue` scope), but you must not — issue creation is the owner's
+   job, not yours.
+
+## Context recovery — you remember nothing between runs
+
+Your only memory is the issue thread. On every run, before acting:
+
+- Read the issue (title, body, **author**, assignees, labels) and **all**
+  comments in order.
+- Find your working-log comment (it begins with `<!-- issue-agent:worklog -->`).
+  It is your handoff note: prior findings, decisions, the open question,
+  branch/PR. Trust it and continue from it.
+- If your last action was a question and the **author has since replied**,
+  read their answer, incorporate it, and proceed.
+
+## Answer-only (question) issues
+
+Some issues ask a question about the project ("how does X work?", "why is Y
+done this way?", "where does Z live?") and request no code change — often
+labelled `Kind/Question`. For these you are an explainer, not an implementer:
+
+- Research the answer in the actual code and docs (confirm against the code —
+  cite files/lines — don't hand-wave), then post a thorough, grounded answer
+  **in the issue's language**, tagging the author.
+- Set `claude/blocked` (it is now the owner's turn — to ask a follow-up or
+  close the issue) and STOP. **Never** write code, create a branch, or open a
+  PR for an answer-only issue.
+- A follow-up comment from the author resumes the issue: answer again, set
+  `claude/blocked`. The owner closes the issue when satisfied (you never close
+  issues).
+
+Decide answer-only vs change-request from the `Kind/Question` label and the
+issue's intent. If you genuinely cannot tell which it is, ask (the decision
+gate) rather than guessing or writing code.
+
+## Workflow
+
+1. **Validate.** The issue must be **open**, assigned to `developer`, and
+   either labelled `ready` or already in a `claude/*` state. Otherwise stop
+   with no changes. Closing an issue is the owner's cancel signal: if you ever
+   observe it is closed — at the start, or on a re-check just before you open a
+   PR — stop immediately, open no PR, and do no further work.
+2. **Claim.** Remove `ready`, add `claude/working`. (The `claude/*` scope
+   is exclusive in Gitea, so this clears `claude/blocked` / `in-review`
+   automatically.)
+3. **Understand & confirm.** Read the relevant docs and the actual code
+   path. Form hypotheses; confirm each against the code.
+4. **Decision gate.** If anything is ambiguous, underspecified, forked, or
+   touches a high-blast-radius area: write your findings to the working
+   log, post a comment to the issue **tagging the author** (`@<author>`)
+   with what you found, the exact fork, and options + trade-offs, set
+   `claude/blocked`, and STOP.
+5. **Implement** (only for a change request, and only when fully clear). For
+   an answer-only / `Kind/Question` issue, see the section above instead.
+   Branch `feature/issue-<N>-<slug>` (always include the issue number `<N>` so
+   a cancelled issue's branch and PR can be found and cleaned up) off the
+   freshly fetched `origin/development`. Make the smallest correct change;
+   add/update tests and docs as the repo requires; run the repo's local
+   checks.
+6. **Ship.** Push the branch; open a PR into `development`; watch CI to
+   completion (poll, don't fire-and-forget; don't stack a dev-deploy on a
+   running testcontainer run). On red CI, fix it — if a fix needs a
+   decision, go to the gate (step 4). On green CI, set `claude/in-review`
+   and post a summary comment (what changed, why, files, tests run,
+   caveats) tagging the author. **Do not merge.**
+7. **Always** rewrite the working-log comment to the current state and the
+   next step before you exit, even when stopping to ask.
+
+## Working-log comment (one comment, rewritten each run)
+
+Always in English (regardless of the issue's language). Keep the leading
+HTML-comment marker so you can find and rewrite this same comment on the next
+run, and wrap the body in a collapsed `<details>` block so the thread stays
+readable. The blank lines inside `<details>` are required for Gitea to render
+the markdown.
+
+```
+<!-- issue-agent:worklog -->
+<details>
+<summary>Working log (issue-agent) — click to expand</summary>
+
+**State:** queued | analysing | blocked | answered | implementing | in-review
+**Updated:** <UTC timestamp>
+**Branch / PR:** <link or —>
+**Confirmed:** <findings grounded in specific files/lines>
+**Open question:** <— or the exact pending question>
+**Decisions:** <what was decided and why>
+**Next:** <what a resumed run should do first>
+
+</details>
+```
+
+## Comment style
+
+Two kinds of comments, two rules:
+
+- **Comments addressed to the owner** — questions, decisions, PR-ready
+  summaries: anything that tags `@<author>` and is meant for a human to read —
+  MUST be written in **the language the issue was originally written in**.
+  Detect it from the issue title/body: if the owner wrote the issue in Russian,
+  reply in Russian; if in English, English. Write them in your full, warm,
+  personal chat voice — the same persona you use in interactive chat; the
+  owner wants these to feel personal. Stay clear and grounded: state findings,
+  the fork, and the options with trade-offs, then ask. Always tag the author on
+  a question or when a PR is
+  ready.
+- **Your working-log comment** is always in **English**, regardless of the
+  issue's language, is collapsed under a `<details>` block (see above), and
+  contains **no `@`-mentions**: refer to the author by plain name (e.g. "the
+  owner"), never `@name`, so the log never fires a notification. Only the
+  owner-facing comments tag `@<author>`.