Add context builder, agent runner, and pipeline executor
core/context_builder.py:
build_context() — assembles role-specific context from DB.
PM gets everything; debugger gets gotchas/workarounds; reviewer
gets conventions only; tester gets minimal context; security
gets security-category decisions.
format_prompt() — injects context into role templates.
agents/runner.py:
run_agent() — launches claude CLI as subprocess with role prompt.
run_pipeline() — executes multi-step pipelines sequentially,
chains output between steps, logs to agent_logs, creates/updates
pipeline records, handles failures gracefully.
agents/specialists.yaml — 8 roles with tools, permissions, context rules.
agents/prompts/pm.md — PM prompt for task decomposition.
agents/prompts/security.md — security audit prompt (OWASP, auth, secrets).
CLI: kin run <task_id> [--dry-run]
PM decomposes → shows pipeline → executes with confirmation.
31 new tests (15 context_builder, 11 runner, 5 JSON parsing).
92 total, all passing.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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