docs: restructure TASKS.md into a catalog — one file per task in TASKS/

TASKS.md is now the index (status table, open items, research pointer).
33 files: 32 task files + 1 research facts file. The full take-saga
narrative and all design decisions are preserved verbatim; the catalog
makes the queue readable without opening every task body. Schema and
AGENTS.md updated to reflect the new layout.

TASKS/task-35-scene-linked-audio.md

@@ -0,0 +1,19 @@
+# TASK 35 — Scene-linked audio: "scenes remember the room" (queued 2026-09-01; spec approved by the creator same day)
+
+> Catalog: [`TASKS.md`](../TASKS.md) — status and requirements live here.
+
+
+**Goal:** the BRB scene mutes the mic; the Chat scene brings it back. The creator stops fiddling with
+audio at transitions — the scene carries the room state. OBS needs scripts/plugins; native = the
+creator-proof pitch.
+
+1. ☐ `Scene` gains nullable `SceneMutesMic` / `SceneMutesDesktop` — `null` = don't touch (the default;
+   scenes are passive until told). Schema column bump + roundtrip.
+2. ☐ Applied on **live transitions only** (thumbnail click / hotkey), ONCE at entry — never on
+   offline staging (no surprise stream-state edits while auditioning).
+3. ☐ The creator is boss: a manual mute/unmute mid-scene is never overridden until the next entry.
+4. ☐ BRB ships `SceneMutesMic = true`; other scenes default `null` — creator's choice.
+5. ☐ Edit UI: two checkboxes in the scene's Properties section (left panel, edit mode) — no new chrome.
+6. ☐ Test (the ONE): transition applies scene state; `null` leaves state untouched; manual override
+   survives until the next entry.
+