# Session Context Dump — 2026-02-06

## What Was Tasked

User requested building a **silent background client** that runs on a developer's laptop and continuously pushes coding agent session data to a central Postgres server. The full requirements from `TASK.md`:

1. Build a daemon that watches session files from Claude Code, Codex CLI, Gemini CLI, and Cursor IDE
2. Push normalized data to Postgres (via Docker)
3. Use git worktrees with parallel Claude Code agents to build it
4. Each agent works in `worktrees/<agent-name>/` on its own branch
5. Agents coordinate via `project_logs/<agent>_progress.json` files
6. Blocked agents poll progress files and wait for dependencies
7. Track work via GitHub issues (assigned to `sagarsrc`)
8. Write plans to `docs/plan-*.md`
9. Merge all worktrees into a single integration branch
10. Design should handle 24-hour continuous operation

Additionally, the user referenced [Anthropic's "Effective Harnesses for Long-Running Agents"](https://www.anthropic.com/engineering/effective-harnesses-for-long-running-agents) as a design guide.

---

## What Was Achieved

### Phase 1: Planning & Research

- Read and analyzed the entire existing codebase (schemas, transforms, utils for 4 CLI tools)
- Fetched and synthesized the Anthropic long-running agents article
- Researched: watchdog file monitoring, psycopg3 async COPY (280x faster), Python daemon patterns, systemd/launchd services, multi-agent coordination
- Discovered prior unmerged work on `feat/traced-daemon` branch (~3,600 lines) — user chose to **start fresh** rather than merge it
- Designed three-tier architecture: **daemon → ingest server → Postgres**

**Deliverables:**
- `docs/plan-traced-postgres-06022026.md` — full technical plan with architecture, schema, worktree assignments, merge strategy
- `docs/orchestration-runbook-06022026.md` — step-by-step playbook for running 4 parallel agents

### Phase 2: Infrastructure Setup

- Created 4 git worktrees: `infra-db`, `ingest-server`, `daemon-core`, `ops-cli`
- Wrote agent-specific `CLAUDE.md` in each worktree with full task specs, deliverables, constraints, coordination rules
- Created 5 GitHub issues ([#34](https://github.com/quickcall-dev/trace/issues/34) epic + [#35](https://github.com/quickcall-dev/trace/issues/35), [#36](https://github.com/quickcall-dev/trace/issues/36), [#37](https://github.com/quickcall-dev/trace/issues/37), [#38](https://github.com/quickcall-dev/trace/issues/38) sub-issues), all assigned to `sagarsrc`, linked as sub-issues
- Seeded `project_logs/*.json` progress files for all 4 agents
- Created `scripts/agent-status.sh` monitoring dashboard
- Configured git hooks in all worktrees

### Phase 3: Parallel Agent Execution

- Set up tmux session (`agents`) with 2x2 grid layout
- Launched Claude Code (`--dangerously-skip-permissions`) in all 4 panes
- Sent initial task prompts to each agent
- Agents ran in parallel:
  - **infra-db** + **ops-cli** started immediately (no blockers)
  - **ingest-server** waited for infra-db, then started
  - **daemon-core** waited for ingest-server, then started
- All 4 agents completed successfully (~30 min total)

### Phase 4: Merge & PR

- Merged all 4 branches into main in dependency order: `infra` → `ingest-server` → `daemon-core` → `ops-cli`
- Resolved 2 merge conflicts (duplicate `daemon` key in pyproject.toml, overlapping `daemon/__init__.py`)
- All tests passed: **173 passed, 10 skipped**
- Fixed commit authorship (was defaulting to Ubuntu system user) using `git filter-branch`
- Moved merged work to `feat/traced-v2-integration` branch, reset main
- Cleaned up: removed worktrees, deleted local and remote feature branches, pruned stale refs
- Pushed integration branch and created PR [#39](https://github.com/quickcall-dev/trace/pull/39)

---

## What Was Built (4,184 lines added)

### `qc_trace/db/` — Database Layer
| File | Lines | Purpose |
|------|-------|---------|
| `schema.sql` | 61 | Postgres schema: sessions, messages, token_usage, tool_calls, tool_results |
| `connection.py` | 58 | psycopg3 AsyncConnectionPool wrapper |
| `writer.py` | 187 | Batch COPY writer for NormalizedMessage |
| `migrations.py` | 50 | Schema version tracking |

### `qc_trace/server/` — HTTP Ingest Server
| File | Lines | Purpose |
|------|-------|---------|
| `app.py` | 174 | stdlib HTTP server (localhost:7777) |
| `handlers.py` | 189 | POST /ingest, POST /sessions, GET /health |
| `batch.py` | 118 | Accumulate + flush (100 rows or 5s timeout) |
| `Dockerfile` | 14 | Container image for ingest server |

### `qc_trace/daemon/` — File Watcher Daemon
| File | Lines | Purpose |
|------|-------|---------|
| `watcher.py` | 82 | File discovery for 4 sources (glob patterns) |
| `collector.py` | 205 | Source-specific collectors (line-resume for JSONL, hash-based for JSON/txt) |
| `state.py` | 103 | File processing state, atomic JSON writes |
| `pusher.py` | 140 | HTTP POST with retry queue + exponential backoff |
| `main.py` | 116 | Poll-collect-push loop (5s interval) |
| `config.py` | 49 | DaemonConfig dataclass |
| `progress.py` | 129 | Progress JSON writer/reader |

### `qc_trace/cli/` — CLI & Ops
| File | Lines | Purpose |
|------|-------|---------|
| `traced.py` | 324 | argparse CLI: start, stop, status, logs, db init |
| `qc-traced.service` | 15 | systemd unit file |
| `com.quickcall.traced.plist` | 27 | launchd plist |
| `install.sh` | 67 | OS-detecting service installer |
| `uninstall.sh` | 65 | Service removal script |

### Tests — 106 new tests
| File | Tests | Coverage |
|------|-------|---------|
| `test_db_writer.py` | 235 lines | DB writer, batch COPY, connection pool |
| `test_ingest_server.py` | 582 lines | All HTTP endpoints, batch accumulator |
| `test_daemon_collector.py` | 147 lines | All 4 source collectors |
| `test_daemon_pusher.py` | 159 lines | Retry queue, exponential backoff |
| `test_daemon_state.py` | 114 lines | State persistence, change detection |
| `test_daemon_watcher.py` | 145 lines | File discovery patterns |
| `test_cli.py` | 377 lines | All CLI commands |

### Infrastructure
| File | Purpose |
|------|---------|
| `docker-compose.yml` | Postgres 16 with persistent volume |
| `scripts/dev-db.sh` | Start/stop dev database |
| `scripts/agent-status.sh` | Agent monitoring dashboard |

---

## Other Work Done This Session

- **CLAUDE.md** — Created project-level instructions for future Claude Code sessions
- **Statusline** — Configured Claude Code statusline showing `user@host:dir | model | ctx: N%`
- **Fixed npm installation** — Removed leftover npm global Claude Code conflicting with native install
- **Git config** — Set up correct author identity after agents committed with wrong email

---

## GitHub Artifacts

| Type | Number | URL |
|------|--------|-----|
| Epic | #34 | https://github.com/quickcall-dev/trace/issues/34 |
| Infra issue | #35 | https://github.com/quickcall-dev/trace/issues/35 |
| Server issue | #36 | https://github.com/quickcall-dev/trace/issues/36 |
| Daemon issue | #37 | https://github.com/quickcall-dev/trace/issues/37 |
| Ops issue | #38 | https://github.com/quickcall-dev/trace/issues/38 |
| PR | #39 | https://github.com/quickcall-dev/trace/pull/39 |

---

## Current State

- **main** at `f113e87` (unchanged, matches origin)
- **feat/traced-v2-integration** pushed with all work, PR #39 open
- All worktrees removed, feature branches cleaned up
- 173 tests passing (10 skipped — need live Postgres)
- Ready for PR review and merge
