chore: title agent runs by issue number (run-name)

Without run-name, Gitea titles each ai-agent run by main's head commit, so runs aren't identifiable
in the Actions list. Add `run-name: ai-agent · #${{ github.event.issue.number }}` to the standard
caller (both the file and the README stub) so each run shows its issue.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

.gitea/workflows/ai-agent.yml

@@ -1,4 +1,5 @@
 name: ai-agent
+run-name: ai-agent · #${{ github.event.issue.number }}
 # Standard caller for the shared AI-agent workflow (ffaerber/agents). Copy this file VERBATIM into
 # any repo that should get the agents — it is identical in every repo. All logic + scripts live in
 # agents/.gitea/workflows/; scripts are fetched from @main at run time. The `jobs.agent` wrapper is

README.md

@@ -35,10 +35,12 @@ it is the source of truth, and `agents` itself uses the same file:
 
 ```yaml
 name: ai-agent
+run-name: ai-agent · #${{ github.event.issue.number }}
 # Standard caller for the shared AI-agent workflow (ffaerber/agents). Copy this file VERBATIM into
 # any repo that should get the agents — it is identical in every repo. All logic + scripts live in
 # agents/.gitea/workflows/; scripts are fetched from @main at run time. The `jobs.agent` wrapper is
 # required: a reusable (workflow_call) workflow can only be invoked from a caller job, not top-level.
+# `run-name` titles each run by the triggering issue (e.g. "ai-agent · #42") in the Actions list.
 on:
   issue_comment:
     types: [created]