docs(decisions): renumber insert icon system D-084 → D-086

Resolves ID collision: D-084 was used independently by both the copy
branch (line ID scheme, content.md) and the visual branch (insert icon
system, perception.md). Content's D-084 keeps the number; visual's is
renumbered to D-086.

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

CHANGELOG.md

@@ -40,7 +40,7 @@ Format based on [Keep a Changelog](https://keepachangelog.com/).
 - Protocol versioning tests — version round-trip, mismatch detection, serde_default migration pattern, full variant coverage (#232)
 - Team monitoring rules — heartbeat rule for stuck agent detection, bottleneck detection pattern
 - `tooling/tea-comment` — single-command wrapper for posting Gitea PR/issue comments with multi-line bodies
-- D-084: Insert icon system — custom SVG icons over icon fonts, authored to insert geometric constraints with lattice_profile weight scaling
+- D-086: Insert icon system — custom SVG icons over icon fonts, authored to insert geometric constraints with lattice_profile weight scaling
 - Insert/HUD wireframe and visual spec (#314) — dual character variants (smuggler social network view, detective investigation overlay) with pixel-precise layout, entity markers, time display, border arrows, commission grid, and all interaction states
 - Contradiction monologue lines — 16 hand-authored lines (8 detective, 8 smuggler) for Sera/Kael FRIEND arc, Phase 2 blindsiding + Phase 3 pattern recognition, cognitive-dissonance-not-accusation tone per D-083 (#552)
 - Diegetic tutorial monologue — 20 lines (10 per character) teaching movement, fog, sound, NPC interaction, and insert/HUD through character voice, fire-once on first-time events (#330)

decisions/README.md

@@ -11,7 +11,7 @@ Cross-domain decisions live in one file with cross-reference notes in related fi
 | File | Domain | Decisions |
 |------|--------|-----------|
 | [architecture.md](architecture.md) | Technical foundation | D-008, D-009, D-010, D-012, D-020, D-026, D-030, D-031, D-041, D-042, D-054, D-055, D-066, D-068, D-073, D-085 |
-| [perception.md](perception.md) | Player observation | D-011, D-015, D-016, D-017, D-018, D-019, D-033, D-035, D-043, D-044, D-045, D-046, D-047, D-048, D-049, D-052, D-056, D-057, D-058, D-059, D-060, D-061, D-067, D-069, D-070, D-071, D-072, D-076, D-077, D-078, D-084 |
+| [perception.md](perception.md) | Player observation | D-011, D-015, D-016, D-017, D-018, D-019, D-033, D-035, D-043, D-044, D-045, D-046, D-047, D-048, D-049, D-052, D-056, D-057, D-058, D-059, D-060, D-061, D-067, D-069, D-070, D-071, D-072, D-076, D-077, D-078, D-086 |
 | [content.md](content.md) | NPC, dialogue, templates | D-023, D-024, D-025, D-028, D-029, D-032, D-034, D-035, D-036, D-037, D-050, D-062, D-063, D-064, D-074, D-075, D-084 |
 | [scope.md](scope.md) | Game concept, prototype | D-001, D-003, D-005, D-006, D-007, D-013, D-014, D-027, D-038, D-039, D-051, D-053, D-065 |
 | [process.md](process.md) | Team, workflow | D-004, D-021, D-022, D-040 |

decisions/perception.md

@@ -446,7 +446,7 @@ How the player observes and interacts with the world: camera, fog, line-of-sight
 - **Implements:** Tickets #547 (struct + detection), #550 (monologue + event chain)
 - **Cross-reference:** [D-034](content.md#d-034-the-friend-npc-archetype), [D-033](perception.md#d-033-entity-color--relationship-to-player), [D-041](architecture.md#d-041-knowledge-graph-data-model), [D-079](#d-079-knowledge-grant-architecture), [D-080](#d-080-npc-to-npc-knowledge-propagation)
 
-### D-084: Insert icon system — custom SVG, no icon font
+### D-086: Insert icon system — custom SVG, no icon font
 - **Date:** 2026-02-24
 - **Decision:** The insert overlay (z-layer 6) uses **custom SVG icons**, not an icon font. The v0.1 icon vocabulary (~12–15 shapes: stance indicators, perception mode icons, inventory item silhouettes, border arrows) is too small and too specific for a font. No available icon font (Material Symbols, Phosphor, Feather, Tabler) matches the insert's geometric/diegetic visual language — they all read as "app UI," not "neural lattice overlay." Custom SVGs authored to the insert's constraint set (clean geometry, minimal anchor points, `#c8d0e0` chrome color, 1px stroke base weight) ensure all insert elements feel generated by the same system.
 - **Why not an icon font:**
@@ -467,4 +467,4 @@ How the player observes and interacts with the world: camera, fog, line-of-sight
 
 ---
 
-*38 decisions. Last updated: 2026-02-24 (D-084: Insert icon system)*
+*38 decisions. Last updated: 2026-02-24 (D-086: Insert icon system)*