fix: Prevent duplicate workflow runs on @codebot mentions

Critical fix for workflow routing that was causing 3x duplication on every
@codebot mention. All three workflows (ai-chat, ai-comment-reply, ai-issue-triage)
were triggering simultaneously.

Changes:
- ai-issue-triage.yml: Only runs on '@codebot triage' (unchanged, already specific)
- ai-comment-reply.yml: Only runs on specific commands (help, explain, suggest, etc)
- ai-chat.yml: Only runs on free-form questions (excludes all specific commands)

Workflow routing logic:
1. '@codebot triage' → ai-issue-triage.yml ONLY
2. '@codebot <command>' → ai-comment-reply.yml ONLY
3. '@codebot <question>' → ai-chat.yml ONLY (fallback)

This prevents the massive duplication issue where every @codebot mention
triggered all three workflows simultaneously, causing 10+ redundant runs.

Updated documentation in CLAUDE.md with workflow routing architecture.

.gitea/workflows/ai-comment-reply.yml

@@ -1,17 +1,30 @@
 name: AI Comment Reply
 
+# WORKFLOW ROUTING:
+# This workflow handles SPECIFIC commands: help, explain, suggest, security, summarize, review-again, setup-labels
+# Other workflows: ai-issue-triage.yml (@codebot triage), ai-chat.yml (free-form questions)
+
 on:
     issue_comment:
         types: [created]
 
 # CUSTOMIZE YOUR BOT NAME:
-# Change '@ai-bot' below to match your config.yml mention_prefix
+# Change '@codebot' in the 'if' condition below to match your config.yml mention_prefix
 # Examples: '@bartender', '@uni', '@joey', '@codebot'
 
 jobs:
     ai-reply:
         runs-on: ubuntu-latest
-        if: contains(github.event.comment.body, '@codebot') # <-- Change this to your bot name
+        # Only run for specific commands (not free-form chat or triage)
+        # This prevents duplicate runs with ai-chat.yml and ai-issue-triage.yml
+        if: |
+            (contains(github.event.comment.body, '@codebot help') ||
+             contains(github.event.comment.body, '@codebot explain') ||
+             contains(github.event.comment.body, '@codebot suggest') ||
+             contains(github.event.comment.body, '@codebot security') ||
+             contains(github.event.comment.body, '@codebot summarize') ||
+             contains(github.event.comment.body, '@codebot review-again') ||
+             contains(github.event.comment.body, '@codebot setup-labels'))
         steps:
             - uses: actions/checkout@v4