fix(tests): sprint-37 sweep — #866, #869, #870 client test cleanup

#866: Fix _escape_bbcode in dialogue_box.gd — only escape '[', not ']'.
Chaining .replace(']', '[rb]') after .replace('[', '[lb]') corrupted the
[lb] escape itself. Updated test_dialogue_sprint18.gd accordingly.

#869: Migrate test_anti_tedium + test_bug_report_ring_buffer to instantiate
BugReportDialog via .tscn (BugReportDialogScene.instantiate()) instead of
bare Control.new() + set_script(). Sprint 36 moved bug_report_dialog.gd to
extends MetaScreen; the old load path was an orphan .uid file returning null.

#870: Delete 8 parse-error test files (test_debug_overlay_sprint19,
test_entanglement_sprint22, test_fog_sprint22, test_journal_sprint18,
test_minimap_sprint18, test_session_manager_sprint19, test_sprint30,
test_sprite_integration) + .uid sidecars. Coverage tickets filed for
fog/journal/minimap (#879, #880, #881). Sprint docs updated with #882 note.

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

docs/sprints/sprint-37/client.md

@@ -15,6 +15,7 @@
 | #869 | Fix MetaScreen test helper regression — anti_tedium suite (7 fails) | high | — |
 | #870 | Delete or revive 8 parse-error test files | medium | — |
 | #875 | Drop PROTOCOL_VERSION on client (D-192) | medium | #874 (server) |
+| #882 | Strip archetype-driven client code (follow-up to #878) | medium | #878 (server) |
 
 Use `tooling/db/ticket show <id>` for full details.
 
@@ -66,10 +67,18 @@ Use `tooling/db/ticket show <id>` for full details.
 - Update any fixture-replay paths that read `version`.
 - Keep all field-presence and roundtrip behavioral tests.
 
+**#882 — Strip archetype-driven client code (follow-up to server #878)**
+- Added 2026-04-21. Blocked by server #878 (removes `character_archetype` from StartupMessage; rides #874's PROTOCOL_VERSION break).
+- Per lead direction: the CharacterArchetype trace is Phase 6 filler, not production. Keep character-creation UI and insert screens; strip everything else.
+- Strip: `character_archetype` field in `game_state.gd` (line 100), `lattice_profile` derivation (line 47); `session_manager.gd` `save_character_archetype()`, `_read_archetype_file()`, character.txt save/load (lines 58, 172–192); `protocol.gd` `character_archetype` on StartupMessage; `sim_bridge.gd` archetype wire-up; any monologue color-palette code keyed on `lattice_augmented`/`lattice_baseline`; audit `tests/client/test_signal_sprint24.gd`.
+- Verify: client launches, character creation UI loads, insert screens render, session starts. Grep `character_archetype`, `lattice_profile`, `smuggler`, `detective` in `client/` — only character-creation UI references remain.
+- Context: server-side audit at `docs/architecture/sprint-37-878-audit.md` (on server branch until #878 merges).
+
 ## Dependency Chain
 
 ```
 #874 (server) → #875 (client PROTOCOL_VERSION drop)
+#878 (server) → #882 (client archetype strip)
 #872 (New Game regression fix) → #873 (merge-path tests add coverage for this flow)
 #866, #869, #870 → standalone, parallel
 ```