feat: add PHP development stack, atomic tasks, modular code rules, agent monitoring, fix target project detection
7 evolutionary tasks implemented:
1. PHP web development: php-developer agent + 6 skills (Laravel, Symfony, WordPress, security, testing, modular architecture) + 2 pipeline commands (/laravel, /wordpress)
2. Atomic task decomposition: 1 action = 1 task rule, task sizing guide, decomposition protocol for orchestrator, token budgets per complexity
3. Modular code rules: max 100 lines/file, max 30 lines/function, service/repository patterns, cross-module communication via events only
4. Gitea-centric workflow: mandatory issue creation before work, research with links, progress checkboxes, screenshots on test, git history as knowledge base
5. Fix: target project auto-detection — removed all hardcoded UniqueSoft/APAW from API calls, added get_target_repo() via git remote, GITEA_TARGET_REPO env override
6. Agent execution monitoring: agent-executions.jsonl logging, agent-stats.ts statistics script, required fields per invocation, Gitea comment includes duration/tokens
7. Token optimization: 1 action = 1 task principle, token budgets by task type, routing matrix, no scope creep, skip unnecessary pipeline steps
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