feat(tess): persist durable session state (#729)

packages/db/drizzle/0012_interaction_durable_state.sql

@@ -0,0 +1,71 @@
+CREATE TYPE "public"."interaction_handoff_status" AS ENUM('pending', 'accepted');--> statement-breakpoint
+CREATE TYPE "public"."interaction_inbox_status" AS ENUM('pending', 'processing', 'processed');--> statement-breakpoint
+CREATE TYPE "public"."interaction_outbox_status" AS ENUM('pending', 'processing', 'delivered');--> statement-breakpoint
+CREATE TABLE "interaction_checkpoints" (
+	"session_id" text PRIMARY KEY NOT NULL,
+	"checkpoint_id" text NOT NULL,
+	"cursor" text NOT NULL,
+	"summary" text NOT NULL,
+	"compaction_epoch" integer NOT NULL,
+	"created_at" timestamp with time zone DEFAULT now() NOT NULL,
+	"updated_at" timestamp with time zone DEFAULT now() NOT NULL,
+	CONSTRAINT "interaction_checkpoints_checkpoint_id_unique" UNIQUE("checkpoint_id")
+);
+--> statement-breakpoint
+CREATE TABLE "interaction_handoffs" (
+	"handoff_id" text PRIMARY KEY NOT NULL,
+	"session_id" text NOT NULL,
+	"destination" text NOT NULL,
+	"correlation_id" text NOT NULL,
+	"checkpoint_id" text NOT NULL,
+	"status" "interaction_handoff_status" DEFAULT 'pending' NOT NULL,
+	"created_at" timestamp with time zone DEFAULT now() NOT NULL,
+	"updated_at" timestamp with time zone DEFAULT now() NOT NULL
+);
+--> statement-breakpoint
+CREATE TABLE "interaction_inbox" (
+	"id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
+	"session_id" text NOT NULL,
+	"idempotency_key" text NOT NULL,
+	"correlation_id" text NOT NULL,
+	"content" text NOT NULL,
+	"content_digest" text NOT NULL,
+	"status" "interaction_inbox_status" DEFAULT 'pending' NOT NULL,
+	"created_at" timestamp with time zone DEFAULT now() NOT NULL,
+	"updated_at" timestamp with time zone DEFAULT now() NOT NULL
+);
+--> statement-breakpoint
+CREATE TABLE "interaction_outbox" (
+	"id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
+	"session_id" text NOT NULL,
+	"idempotency_key" text NOT NULL,
+	"correlation_id" text NOT NULL,
+	"kind" text NOT NULL,
+	"content" text NOT NULL,
+	"content_digest" text NOT NULL,
+	"status" "interaction_outbox_status" DEFAULT 'pending' NOT NULL,
+	"created_at" timestamp with time zone DEFAULT now() NOT NULL,
+	"updated_at" timestamp with time zone DEFAULT now() NOT NULL
+);
+--> statement-breakpoint
+CREATE TABLE "interaction_sessions" (
+	"id" text PRIMARY KEY NOT NULL,
+	"agent_name" text NOT NULL,
+	"tenant_id" text NOT NULL,
+	"owner_id" text NOT NULL,
+	"provider_id" text NOT NULL,
+	"runtime_session_id" text NOT NULL,
+	"created_at" timestamp with time zone DEFAULT now() NOT NULL,
+	"updated_at" timestamp with time zone DEFAULT now() NOT NULL
+);
+--> statement-breakpoint
+ALTER TABLE "interaction_checkpoints" ADD CONSTRAINT "interaction_checkpoints_session_id_interaction_sessions_id_fk" FOREIGN KEY ("session_id") REFERENCES "public"."interaction_sessions"("id") ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE "interaction_handoffs" ADD CONSTRAINT "interaction_handoffs_session_id_interaction_sessions_id_fk" FOREIGN KEY ("session_id") REFERENCES "public"."interaction_sessions"("id") ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE "interaction_inbox" ADD CONSTRAINT "interaction_inbox_session_id_interaction_sessions_id_fk" FOREIGN KEY ("session_id") REFERENCES "public"."interaction_sessions"("id") ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE "interaction_outbox" ADD CONSTRAINT "interaction_outbox_session_id_interaction_sessions_id_fk" FOREIGN KEY ("session_id") REFERENCES "public"."interaction_sessions"("id") ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE "interaction_sessions" ADD CONSTRAINT "interaction_sessions_owner_id_users_id_fk" FOREIGN KEY ("owner_id") REFERENCES "public"."users"("id") ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+CREATE INDEX "interaction_handoffs_session_status_idx" ON "interaction_handoffs" USING btree ("session_id","status");--> statement-breakpoint
+CREATE UNIQUE INDEX "interaction_inbox_session_idempotency_idx" ON "interaction_inbox" USING btree ("session_id","idempotency_key");--> statement-breakpoint
+CREATE INDEX "interaction_inbox_session_status_created_idx" ON "interaction_inbox" USING btree ("session_id","status","created_at");--> statement-breakpoint
+CREATE UNIQUE INDEX "interaction_outbox_session_idempotency_idx" ON "interaction_outbox" USING btree ("session_id","idempotency_key");--> statement-breakpoint
+CREATE INDEX "interaction_outbox_session_status_created_idx" ON "interaction_outbox" USING btree ("session_id","status","created_at");

packages/db/drizzle/0013_interaction_checkpoint_history.sql

@@ -0,0 +1,5 @@
+ALTER TABLE "interaction_checkpoints" DROP CONSTRAINT "interaction_checkpoints_checkpoint_id_unique";--> statement-breakpoint
+ALTER TABLE "interaction_checkpoints" DROP CONSTRAINT "interaction_checkpoints_pkey";--> statement-breakpoint
+ALTER TABLE "interaction_checkpoints" ADD COLUMN "id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL;--> statement-breakpoint
+CREATE UNIQUE INDEX "interaction_checkpoints_session_idempotency_idx" ON "interaction_checkpoints" USING btree ("session_id","checkpoint_id");--> statement-breakpoint
+CREATE INDEX "interaction_checkpoints_session_epoch_idx" ON "interaction_checkpoints" USING btree ("session_id","compaction_epoch");

packages/db/drizzle/0014_interaction_outbox_channel_scope.sql

@@ -0,0 +1,5 @@
+ALTER TABLE "interaction_outbox" ADD COLUMN "channel_id" text;
+--> statement-breakpoint
+UPDATE "interaction_outbox" SET "channel_id" = 'legacy:unknown' WHERE "channel_id" IS NULL;
+--> statement-breakpoint
+ALTER TABLE "interaction_outbox" ALTER COLUMN "channel_id" SET NOT NULL;

packages/db/drizzle/0015_interaction_checkpoint_payload_digest.sql

@@ -0,0 +1,3 @@
+ALTER TABLE "interaction_checkpoints" ADD COLUMN "content_digest" text;--> statement-breakpoint
+UPDATE "interaction_checkpoints" SET "content_digest" = 'legacy' WHERE "content_digest" IS NULL;--> statement-breakpoint
+ALTER TABLE "interaction_checkpoints" ALTER COLUMN "content_digest" SET NOT NULL;

packages/db/drizzle/meta/_journal.json

@@ -85,6 +85,34 @@
       "when": 1782310438919,
       "tag": "0011_bitter_gateway",
       "breakpoints": true
+    },
+    {
+      "idx": 12,
+      "version": "7",
+      "when": 1783911983447,
+      "tag": "0012_interaction_durable_state",
+      "breakpoints": true
+    },
+    {
+      "idx": 13,
+      "version": "7",
+      "when": 1783913232578,
+      "tag": "0013_interaction_checkpoint_history",
+      "breakpoints": true
+    },
+    {
+      "idx": 14,
+      "version": "7",
+      "when": 1783913398006,
+      "tag": "0014_interaction_outbox_channel_scope",
+      "breakpoints": true
+    },
+    {
+      "idx": 15,
+      "version": "7",
+      "when": 1783942610000,
+      "tag": "0015_interaction_checkpoint_payload_digest",
+      "breakpoints": true
     }
   ]
 }

packages/db/src/schema.ts

@@ -487,6 +487,120 @@ export const agentLogs = pgTable(
   ],
 );
 
+// ─── Tess durable session state ─────────────────────────────────────────────
+// PostgreSQL is canonical for restart-safe Tess session recovery. The state
+// machine lives in @mosaicstack/agent; these records are its durable adapter.
+
+export const interactionInboxStatusEnum = pgEnum('interaction_inbox_status', [
+  'pending',
+  'processing',
+  'processed',
+]);
+export const interactionOutboxStatusEnum = pgEnum('interaction_outbox_status', [
+  'pending',
+  'processing',
+  'delivered',
+]);
+export const interactionHandoffStatusEnum = pgEnum('interaction_handoff_status', [
+  'pending',
+  'accepted',
+]);
+
+export const interactionSessions = pgTable('interaction_sessions', {
+  id: text('id').primaryKey(),
+  agentName: text('agent_name').notNull(),
+  tenantId: text('tenant_id').notNull(),
+  ownerId: text('owner_id')
+    .notNull()
+    .references(() => users.id, { onDelete: 'cascade' }),
+  providerId: text('provider_id').notNull(),
+  runtimeSessionId: text('runtime_session_id').notNull(),
+  createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
+  updatedAt: timestamp('updated_at', { withTimezone: true }).notNull().defaultNow(),
+});
+
+export const interactionInbox = pgTable(
+  'interaction_inbox',
+  {
+    id: uuid('id').primaryKey().defaultRandom(),
+    sessionId: text('session_id')
+      .notNull()
+      .references(() => interactionSessions.id, { onDelete: 'cascade' }),
+    idempotencyKey: text('idempotency_key').notNull(),
+    correlationId: text('correlation_id').notNull(),
+    content: text('content').notNull(),
+    contentDigest: text('content_digest').notNull(),
+    status: interactionInboxStatusEnum('status').notNull().default('pending'),
+    createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
+    updatedAt: timestamp('updated_at', { withTimezone: true }).notNull().defaultNow(),
+  },
+  (t) => [
+    uniqueIndex('interaction_inbox_session_idempotency_idx').on(t.sessionId, t.idempotencyKey),
+    index('interaction_inbox_session_status_created_idx').on(t.sessionId, t.status, t.createdAt),
+  ],
+);
+
+export const interactionOutbox = pgTable(
+  'interaction_outbox',
+  {
+    id: uuid('id').primaryKey().defaultRandom(),
+    sessionId: text('session_id')
+      .notNull()
+      .references(() => interactionSessions.id, { onDelete: 'cascade' }),
+    idempotencyKey: text('idempotency_key').notNull(),
+    correlationId: text('correlation_id').notNull(),
+    channelId: text('channel_id').notNull(),
+    kind: text('kind').notNull(),
+    content: text('content').notNull(),
+    contentDigest: text('content_digest').notNull(),
+    status: interactionOutboxStatusEnum('status').notNull().default('pending'),
+    createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
+    updatedAt: timestamp('updated_at', { withTimezone: true }).notNull().defaultNow(),
+  },
+  (t) => [
+    uniqueIndex('interaction_outbox_session_idempotency_idx').on(t.sessionId, t.idempotencyKey),
+    index('interaction_outbox_session_status_created_idx').on(t.sessionId, t.status, t.createdAt),
+  ],
+);
+
+export const interactionCheckpoints = pgTable(
+  'interaction_checkpoints',
+  {
+    id: uuid('id').primaryKey().defaultRandom(),
+    sessionId: text('session_id')
+      .notNull()
+      .references(() => interactionSessions.id, { onDelete: 'cascade' }),
+    checkpointId: text('checkpoint_id').notNull(),
+    contentDigest: text('content_digest').notNull(),
+    cursor: text('cursor').notNull(),
+    summary: text('summary').notNull(),
+    compactionEpoch: integer('compaction_epoch').notNull(),
+    createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
+    updatedAt: timestamp('updated_at', { withTimezone: true }).notNull().defaultNow(),
+  },
+  (t) => [
+    uniqueIndex('interaction_checkpoints_session_idempotency_idx').on(t.sessionId, t.checkpointId),
+    index('interaction_checkpoints_session_epoch_idx').on(t.sessionId, t.compactionEpoch),
+  ],
+);
+
+export const interactionHandoffs = pgTable(
+  'interaction_handoffs',
+  {
+    handoffId: text('handoff_id').primaryKey(),
+    sessionId: text('session_id')
+      .notNull()
+      .references(() => interactionSessions.id, { onDelete: 'cascade' }),
+    destination: text('destination').notNull(),
+    correlationId: text('correlation_id').notNull(),
+    checkpointId: text('checkpoint_id').notNull(),
+    status: interactionHandoffStatusEnum('status').notNull().default('pending'),
+    createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
+    updatedAt: timestamp('updated_at', { withTimezone: true }).notNull().defaultNow(),
+  },
+  (t) => [index('interaction_handoffs_session_status_idx').on(t.sessionId, t.status)],
+);
+
 // ─── Skills ─────────────────────────────────────────────────────────────────
 
 export const skills = pgTable(