feat(memory): capture→distill v2 and Memento client integration

.env.local.example

@@ -1,11 +1,17 @@
-# Optional API base URL. Defaults to production when unset.
-# Use staging when validating staging keys.
-# KNOWHERE_BASE_URL=https://api-staging.knowhereto.ai
+# Knowhere API origin. Unset also means production.
+# Local recommendation: production. Staging is only for staging keys.
+KNOWHERE_BASE_URL=https://api.knowhereto.ai
 
-# Optional development override. When set, Notebook skips Dashboard session
+# Local development override. When set, Notebook skips Dashboard session
 # auth and Dashboard-issued JWT creation, then calls Knowhere directly with
 # this key. Leave unset for production and Dashboard-authenticated staging.
-# KNOWHERE_API_KEY=sk_your_development_key_here
+# KNOWHERE_API_KEY=
+
+# --- Local demo case only (观心). Not Notebook core. ---
+# Put the real key in gitignored `.env.local`, copied from
+# `观心2.0-RAG-v1.1-demo/_retrieval/.env`.
+# Do not copy that file's KNOWHERE_BASE_URL — it is a retrieval endpoint
+# path, not the SDK origin above.
 
 # --- Chat provider (server-side only) ---
 # Vercel AI Gateway key; AI SDK picks it up automatically
@@ -61,3 +67,8 @@ DATABASE_URL=postgres://user:password@host/db
 #   pg             — postgres-js (use for local dev against a plain Postgres,
 #                    or for AWS Aurora Postgres if/when we migrate off Neon)
 DATABASE_DRIVER=pg
+
+# --- Memento (fluid memory + retrieval activation) ---
+# Standalone REST + MCP service. Notebook no longer owns these tables.
+MEMENTO_BASE_URL=http://localhost:8787
+MEMENTO_SERVICE_KEY=

drizzle/0015_bumpy_vulcan.sql

@@ -0,0 +1,17 @@
+CREATE TABLE "fluid_observations" (
+	"id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
+	"workspace_id" uuid NOT NULL,
+	"source_message_id" uuid,
+	"signal" text NOT NULL,
+	"evidence_quote" text NOT NULL,
+	"subject_hint" text,
+	"referenced_document_ids" jsonb DEFAULT '[]'::jsonb NOT NULL,
+	"confidence" double precision NOT NULL,
+	"status" text DEFAULT 'pending' NOT NULL,
+	"created_at" timestamp with time zone DEFAULT now() NOT NULL,
+	"consumed_at" timestamp with time zone
+);
+--> statement-breakpoint
+ALTER TABLE "fluid_observations" ADD CONSTRAINT "fluid_observations_workspace_id_workspaces_id_fk" FOREIGN KEY ("workspace_id") REFERENCES "public"."workspaces"("id") ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE "fluid_observations" ADD CONSTRAINT "fluid_observations_source_message_id_chat_messages_id_fk" FOREIGN KEY ("source_message_id") REFERENCES "public"."chat_messages"("id") ON DELETE set null ON UPDATE no action;--> statement-breakpoint
+CREATE INDEX "fluid_observations_workspace_status_created_idx" ON "fluid_observations" USING btree ("workspace_id","status","created_at");

drizzle/0016_wealthy_matthew_murdock.sql

@@ -0,0 +1,13 @@
+CREATE TABLE "retrieval_activations" (
+	"id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
+	"workspace_id" uuid NOT NULL,
+	"unit_type" text NOT NULL,
+	"unit_ref" text NOT NULL,
+	"activation_count" integer DEFAULT 0 NOT NULL,
+	"last_activated_at" timestamp with time zone,
+	"created_at" timestamp with time zone DEFAULT now() NOT NULL
+);
+--> statement-breakpoint
+ALTER TABLE "fluid_memory_items" ADD COLUMN "deactivation_reason" text;--> statement-breakpoint
+ALTER TABLE "retrieval_activations" ADD CONSTRAINT "retrieval_activations_workspace_id_workspaces_id_fk" FOREIGN KEY ("workspace_id") REFERENCES "public"."workspaces"("id") ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+CREATE UNIQUE INDEX "retrieval_activations_unit_idx" ON "retrieval_activations" USING btree ("workspace_id","unit_type","unit_ref");

drizzle/0017_overjoyed_shooting_star.sql

@@ -0,0 +1,5 @@
+DROP TABLE "fluid_memory_items" CASCADE;--> statement-breakpoint
+DROP TABLE "fluid_memory_tokens" CASCADE;--> statement-breakpoint
+DROP TABLE "fluid_observations" CASCADE;--> statement-breakpoint
+DROP TABLE "memory_diffs" CASCADE;--> statement-breakpoint
+DROP TABLE "retrieval_activations" CASCADE;