chore(meta): update changelog

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

CHANGELOG.md

@@ -7,6 +7,13 @@ Format based on [Keep a Changelog](https://keepachangelog.com/).
 ## [Unreleased]
 
 ### Added
+- Round 18 v0.1 gap analysis workshop — 7 agents, 2 rounds, 4 tracks (concept proof, wow factor, missing systems, testability)
+- D-030: Testability architecture — 8 sub-decisions for ticket #214 (gdUnit4, hybrid Rust testing, CauseChain component, three-layer IPC testing)
+- D-031: Time system — 10 ticks = 1 game-minute, 4 day phases (Morning/Afternoon/Evening/Night), diegetic clock display
+- 41 new tickets from gap analysis: 3 epics (Movement & Collision, Observation & Interaction, Game State Management) + 38 stories
+- 15 priority promotions including 3 tickets to critical (deterministic replay, divergent knowledge, divergent relationships)
+- 21 new dependency records mapping critical path through collision → pathfinding → NPC movement → routine execution
+- Workshop directory convention established with per-workshop subdirectories
 - Whitelistable sqlite-init and sqlite-seed wrapper scripts completing the db/connectors/sqlite-* set
 - Round 17 content architecture workshop — Full team (8 agents, 3 rounds) defining content pipeline
 - D-023: Three-tier content model (authored drama modules, templated content, procedural filler) with life-sim substrate
@@ -44,7 +51,12 @@ Format based on [Keep a Changelog](https://keepachangelog.com/).
 - Removed duplicate ROUND-16-STATUS.md from project root (content already in round-16-session-notes.md)
 - Added relative-path convention to Qatux agent persona for cross-system consistency
 
+### Removed
+- dotfiles/tmux.conf (no longer needed)
+
 ### Changed
+- Q-009 (time system) resolved via D-031
+- Ticket catalog expanded from 232 to 273 tickets with sprint sequencing (Run → Feel → Content → Validate)
 - Ticket skill updated to use wrapper scripts exclusively (no more direct python3 calls)
 - Miri's role updated from Canon Guardian to Worldbuilder & Setting Designer (original IP pivot)
 - Project description updated to reflect D-020 engine decision