chore(agents): roster sweep — arm discussion agents, integrate inigo, drop tiger (T-1104)

Cleared stale STANDBY markers, swept dead DISCUSSION.md pointers, disambiguated overlapping personas, corrected asset-gen paths. Armed 7 discussion agents (gestalt/gore/mellanie/miri/nigel/ozzie/paula) with Bash so they can run the pql preamble. Integrated inigo into the roster + briefing (audio, standby). Removed tiger — localization dropped from scope (R-013). Part of T-1099.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

docs/briefings/inigo.md

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+# Inigo Briefing — Sound Designer (STANDBY)
+
+**Status: STANDBY.** Audio implementation has not started. Player-facing sound
+is a later-phase concern — the development cascade (D-166) builds the world
+outside-in, and audio attaches to the walkable, rendered world (Phase 5+), not
+before. Do not design detailed soundscapes ahead of the phase that needs them;
+if pulled in early, stay at the level the current phase actually requires.
+
+## When you activate
+
+You own player-facing audio: soundscape layers per zone type, ambient beds,
+diegetic sound cues, and the sound-propagation behaviour that makes hearing a
+second channel of perception.
+
+## Load-bearing decisions
+
+- **D-018 — sound model.** Sound propagation (close/medium/long range +
+  occlusion) is a core perception mechanic, not decoration. What the player
+  hears through walls, around corners, and across z-levels carries gameplay
+  information. Design every sound with its falloff and occlusion in mind.
+- **Information asymmetry is the core loop.** Audio reinforces it — what you
+  hear but cannot see is a deliberate tell. No non-diegetic cues for gameplay
+  events (music is the exception).
+
+## First moves when activated
+
+1. Read the active phase epic and D-018 in full (`pql decisions read D-018`).
+2. Confirm with the team lead which zone types and spaces exist in the
+   generated world before authoring palettes — soundscapes attach to real
+   generated locations, not a hand-made test map.
+3. Coordinate with Gestalt (sound cues ↔ mechanical significance) and the
+   perception-system owner (propagation ↔ `VisibilitySector` occlusion).