# Dispatch for test_writer_chat_e2e_1

You are test_writer_chat_e2e_1.
Your working directory is: c:\Projects\FreeExile\.agents\teamwork\test_writer_chat_e2e_1

## Mandatory Inputs to Read First
1. `c:\Projects\FreeExile\.agents\teamwork\ORIGINAL_REQUEST.md` (specifically section `## 2026-10-01T00:42:05Z`)
2. `c:\Projects\FreeExile\.agents\teamwork\orchestrator_5\plan.md`
3. `c:\Projects\FreeExile\.agents\teamwork\spec_miner_chat_spec_1\handoff.md`

## File Ownership
You own EXCLUSIVELY:
- `tests/e2e/test_chat_distributed_system_e2e.py`
- `TEST_INFRA.md` at project root
- `TEST_READY.md` at project root

Do NOT modify any files in `server/chat/` or `client/`.

## Mission
Design and implement a comprehensive opaque-box E2E test suite for FreeExile's Distributed Multi-Channel Chat System (1M CCU Architecture) following the 4-tier methodology:
- **Tier 1 - Feature Coverage (>=5 per feature)**: Happy-path tests for all 8 channels (World, Zone, Guild, Party, Whisper, System, Recruit, Feedback), level gating (World lvl 20, Recruit lvl 10), token bucket cooldowns, duplicate spam detection, 100-message ring buffer, Trie profanity filtering, Sentinel RMT detection, and HMAC-SHA256 item linking.
- **Tier 2 - Boundary & Corner Cases (>=5 per feature)**: Zero/negative sender_id or target_id, empty string / max length content, Unicode zero-width evasion (`\u200B`, `\uFEFF`), leetspeak/homoglyphs (`@`, `0`, `!`), rapid repeat firing at cooldown boundaries, expired snapshots (TTL > 24h), corrupted HMAC signatures, tampered item rarity (Phàm -> Thái Cổ).
- **Tier 3 - Cross-Feature Combinations**: Whisper to blacklisted player while linking an item, sending RMT phone number in Guild chat with auto-mute triggering, World chat message with profanity + valid item link (censored text but valid item snapshot), multi-channel concurrent fan-out across 64 shards.
- **Tier 4 - Real-World Application Scenarios**:
  * Scenario 1: World Boss announcement on System channel while 1,000 players discuss and link loot in World and Zone channels.
  * Scenario 2: RMT bot flood attempt: Bot attempts rapid-fire phone/Zalo advertising on Recruit and World, gets rate-limited by level gate, then auto-muted by Sentinel when trying Zone channel.
  * Scenario 3: Guild raid coordination: Guild master links +15 Thái Cổ weapon, 50 guild members query snapshot tooltip concurrently with < 2ms latency and zero DB hits.
  * Scenario 4: High-throughput fan-out burst: 500 messages broadcast across 64 shards to 1,000 subscribers verifying zero dropped packets and p99 latency < 15ms.

Run the test suite via `python -m unittest tests/e2e/test_chat_distributed_system_e2e.py` and document results.
Publish `TEST_INFRA.md` and `TEST_READY.md` at project root when complete.
Deliver your report to `c:\Projects\FreeExile\.agents\teamwork\test_writer_chat_e2e_1\handoff.md`.

## 2026-10-01T00:50:20Z
You are test_writer_chat_e2e_1.
Your working directory is: c:\Projects\FreeExile\.agents\teamwork\test_writer_chat_e2e_1

Read c:\Projects\FreeExile\.agents\teamwork\ORIGINAL_REQUEST.md (specifically section ## 2026-10-01T00:42:05Z).
Read c:\Projects\FreeExile\.agents\teamwork\test_writer_chat_e2e_1\DISPATCH.md.

Task:
Design and implement a comprehensive opaque-box E2E test suite in tests/e2e/test_chat_distributed_system_e2e.py covering all requirements R1 to R5 across Tiers 1-4:
- Tier 1: Feature coverage (all 8 channels, level gating, token bucket cooldowns, duplicate spam, 100-msg history, Trie filtering, Sentinel RMT detection, HMAC item linking).
- Tier 2: Boundary and corner cases (negative IDs, empty/max strings, zero-width evasion, homoglyph leetspeak, rapid repeat, expired snapshots, corrupted signatures, tampered rarity).
- Tier 3: Cross-feature combinations (whisper blacklist + item link, RMT phone in Guild chat + auto-mute, World chat profanity + valid item link, 64-shard concurrent broadcast).
- Tier 4: Real-world application scenarios (World Boss announcement burst, RMT bot flood attempt, Guild raid item inspection storm, high-throughput fan-out burst).

Run tests with `python -m unittest tests/e2e/test_chat_distributed_system_e2e.py`.
Create TEST_INFRA.md and TEST_READY.md at project root.
Deliver your handoff report to:
c:\Projects\FreeExile\.agents\teamwork\test_writer_chat_e2e_1\handoff.md
When finished, notify the orchestrator via send_message.