feat: add managed llm summaries and memory timeline

migrations/000043_content_model_management.down.sql

@@ -0,0 +1,3 @@
+BEGIN;
+DROP TABLE IF EXISTS content_model_config;
+COMMIT;

migrations/000043_content_model_management.up.sql

@@ -0,0 +1,37 @@
+BEGIN;
+
+CREATE TABLE content_model_config (
+    id                  uuid PRIMARY KEY DEFAULT gen_random_uuid(),
+    public_id           uuid NOT NULL UNIQUE DEFAULT gen_random_uuid(),
+    tenant_id           uuid NOT NULL REFERENCES tenant(id),
+    display_name        varchar(120) NOT NULL CHECK (length(trim(display_name)) BETWEEN 1 AND 120),
+    provider            varchar(32) NOT NULL CHECK (provider IN ('ark','openai_compatible')),
+    base_url            varchar(500) NOT NULL CHECK (length(trim(base_url)) BETWEEN 8 AND 500),
+    model_id            varchar(200) NOT NULL CHECK (length(trim(model_id)) BETWEEN 1 AND 200),
+    encrypted_api_key   bytea NOT NULL,
+    nonce               bytea NOT NULL,
+    key_version         bigint NOT NULL DEFAULT 1 CHECK (key_version > 0),
+    credential_hint     varchar(16) NOT NULL,
+    temperature         numeric(3,2) NOT NULL DEFAULT 0.20 CHECK (temperature >= 0 AND temperature <= 2),
+    max_tokens          integer NOT NULL DEFAULT 1200 CHECK (max_tokens BETWEEN 256 AND 8192),
+    status              varchar(16) NOT NULL DEFAULT 'inactive' CHECK (status IN ('inactive','active','revoked')),
+    test_status         varchar(16) NOT NULL DEFAULT 'untested' CHECK (test_status IN ('untested','passed','failed')),
+    last_tested_at      timestamptz,
+    last_error_code     varchar(80),
+    activated_at        timestamptz,
+    created_by          uuid NOT NULL,
+    updated_by          uuid NOT NULL,
+    version             bigint NOT NULL DEFAULT 1 CHECK (version > 0),
+    created_at          timestamptz NOT NULL DEFAULT now(),
+    updated_at          timestamptz NOT NULL DEFAULT now(),
+    CONSTRAINT content_model_creator_tenant_fk FOREIGN KEY (created_by,tenant_id) REFERENCES user_account(id,tenant_id),
+    CONSTRAINT content_model_updater_tenant_fk FOREIGN KEY (updated_by,tenant_id) REFERENCES user_account(id,tenant_id),
+    CONSTRAINT content_model_identity_unique UNIQUE (tenant_id,provider,base_url,model_id)
+);
+
+CREATE UNIQUE INDEX content_model_one_active_per_tenant
+    ON content_model_config(tenant_id) WHERE status='active';
+CREATE INDEX content_model_list_idx
+    ON content_model_config(tenant_id,status,updated_at DESC);
+
+COMMIT;