First AI memory system to model forgetting as a neuroscience-grounded
PROCESS rather than passive decay. Adds the `suppress` MCP tool (#24),
Rac1 cascade worker, migration V10, and dashboard forgetting indicators.
Based on:
- Anderson, Hanslmayr & Quaegebeur (2025), Nat Rev Neurosci — right
lateral PFC as the domain-general inhibitory controller; SIF
compounds with each stopping attempt.
- Cervantes-Sandoval et al. (2020), Front Cell Neurosci PMC7477079 —
Rac1 GTPase as the active synaptic destabilization mechanism.
What's new:
* `suppress` MCP tool — each call compounds `suppression_count` and
subtracts a `0.15 × count` penalty (saturating at 80%) from
retrieval scores during hybrid search. Distinct from delete
(removes) and demote (one-shot).
* Rac1 cascade worker — background sweep piggybacks the 6h
consolidation loop, walks `memory_connections` edges from
recently-suppressed seeds, applies attenuated FSRS decay to
co-activated neighbors. You don't just forget Jake — you fade
the café, the roommate, the birthday.
* 24h labile window — reversible via `suppress({id, reverse: true})`
within 24 hours. Matches Nader reconsolidation semantics.
* Migration V10 — additive-only (`suppression_count`, `suppressed_at`
+ partial indices). All v2.0.x DBs upgrade seamlessly on first launch.
* Dashboard: `ForgettingIndicator.svelte` pulses when suppressions
are active. 3D graph nodes dim to 20% opacity when suppressed.
New WebSocket events: `MemorySuppressed`, `MemoryUnsuppressed`,
`Rac1CascadeSwept`. Heartbeat carries `suppressed_count`.
* Search pipeline: SIF penalty inserted into the accessibility stage
so it stacks on top of passive FSRS decay.
* Tool count bumped 23 → 24. Cognitive modules 29 → 30.
Memories persist — they are INHIBITED, not erased. `memory.get(id)`
returns full content through any number of suppressions. The 24h
labile window is a grace period for regret.
Also fixes issue #31 (dashboard graph view buggy) as a companion UI
bug discovered during the v2.0.5 audit cycle:
* Root cause: node glow `SpriteMaterial` had no `map`, so
`THREE.Sprite` rendered as a solid-coloured 1×1 plane. Additive
blending + `UnrealBloomPass(0.8, 0.4, 0.85)` amplified the square
edges into hard-edged glowing cubes.
* Fix: shared 128×128 radial-gradient `CanvasTexture` singleton used
as the sprite map. Retuned bloom to `(0.55, 0.6, 0.2)`. Halved fog
density (0.008 → 0.0035). Edges bumped from dark navy `0x4a4a7a`
to brand violet `0x8b5cf6` with higher opacity. Added explicit
`scene.background` and a 2000-point starfield for depth.
* 21 regression tests added in `ui-fixes.test.ts` locking every
invariant in (shared texture singleton, depthWrite:false, scale
×6, bloom magic numbers via source regex, starfield presence).
Tests: 1,284 Rust (+47) + 171 Vitest (+21) = 1,455 total, 0 failed
Clippy: clean across all targets, zero warnings
Release binary: 22.6MB, `cargo build --release -p vestige-mcp` green
Versions: workspace aligned at 2.0.5 across all 6 crates/packages
Closes#31
FSRS-6 spaced repetition, spreading activation, synaptic tagging,
hippocampal indexing, and 130 years of memory research.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
