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Changeset 0.16.0 (#74)

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xcaliber
2026-02-27 02:38:35 +00:00
parent 1370d701af
commit 8bb77710b9
28 changed files with 3050 additions and 492 deletions
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437
server/database/migrations/001_v09_schema.sql → server/database/migrations/001_v016_schema.sql
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@@ -1,12 +1,22 @@
-- ==========================================
-- Chat Switchboard — v0.9.0 Consolidated Schema
-- Chat Switchboard — v0.16.0 Consolidated Schema
-- ==========================================
-- Clean-slate schema. Replaces all 001–021 migrations.
-- Clean-slate schema. Replaces all 001–009 migrations.
-- Drop DB and re-create before applying.
--
-- Changes from v0.15.1 (9-file) schema:
-- • Folded all incremental migrations into base CREATEs
-- • Dropped api_key_plain (vault backfill complete)
-- • Dropped projects, project_channels (unused, v0.19.0 redesigns)
-- • Dropped 'moderator' from users.role CHECK (dead code)
-- • CI usernames from the start (LOWER() unique indexes)
-- • Added: groups, group_members, resource_grants (v0.16.0)
-- • Added: pgvector extension declaration
--
-- Design principles:
-- • Explicit scope enums over nullable column tri-states
-- • Personas as trust boundaries with extensible grants
-- • Groups as pure access-control lists (decouple from teams)
-- • Secure by default (models hidden until admin enables)
-- • Only tables with active handlers — no placeholder tables
-- ==========================================
@@ -14,6 +24,23 @@
-- ── Extensions ──────────────────────────────
CREATE EXTENSION IF NOT EXISTS "pgcrypto"; -- gen_random_uuid()
CREATE EXTENSION IF NOT EXISTS "vector"; -- pgvector (KB embeddings)
-- ── Upgrade-path cleanup ───────────────────
-- These objects existed in the 001–009 migration chain but were removed
-- in the v0.16.0 consolidation. Safe no-ops on fresh installs.
DROP TABLE IF EXISTS project_channels CASCADE;
DROP TABLE IF EXISTS projects CASCADE;
DO $$ BEGIN
IF EXISTS (
SELECT 1 FROM information_schema.columns
WHERE table_name = 'provider_configs' AND column_name = 'api_key_plain'
) THEN
ALTER TABLE provider_configs DROP COLUMN api_key_plain;
END IF;
END $$;
-- ── Utility: auto-update updated_at ─────────
@@ -32,26 +59,43 @@ $$ LANGUAGE plpgsql;
CREATE TABLE IF NOT EXISTS users (
id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
username VARCHAR(50) UNIQUE NOT NULL,
email VARCHAR(255) UNIQUE NOT NULL,
username VARCHAR(50) NOT NULL,
email VARCHAR(255) NOT NULL,
password_hash TEXT NOT NULL,
display_name VARCHAR(100),
avatar_url TEXT,
role VARCHAR(20) DEFAULT 'user'
CHECK (role IN ('user', 'admin', 'moderator')),
CHECK (role IN ('user', 'admin')),
is_active BOOLEAN DEFAULT true,
settings JSONB DEFAULT '{}'::jsonb,
-- Vault: per-user encryption key (UEK) for BYOK API keys
encrypted_uek BYTEA,
uek_salt BYTEA,
uek_nonce BYTEA,
vault_set BOOLEAN NOT NULL DEFAULT false,
created_at TIMESTAMPTZ DEFAULT NOW(),
updated_at TIMESTAMPTZ DEFAULT NOW(),
last_login_at TIMESTAMPTZ
);
-- Case-insensitive unique indexes (no bare UNIQUE constraint)
CREATE UNIQUE INDEX IF NOT EXISTS users_username_ci ON users (LOWER(username));
CREATE UNIQUE INDEX IF NOT EXISTS users_email_ci ON users (LOWER(email));
CREATE INDEX IF NOT EXISTS idx_users_username ON users(username);
CREATE INDEX IF NOT EXISTS idx_users_email ON users(email);
DROP TRIGGER IF EXISTS users_updated_at ON users;
CREATE TRIGGER users_updated_at BEFORE UPDATE ON users
FOR EACH ROW EXECUTE FUNCTION update_updated_at();
COMMENT ON COLUMN users.encrypted_uek IS 'UEK encrypted with Argon2id(password)-derived key';
COMMENT ON COLUMN users.uek_salt IS 'Argon2id salt for UEK derivation';
COMMENT ON COLUMN users.uek_nonce IS 'AES-GCM nonce for UEK wrapping';
COMMENT ON COLUMN users.vault_set IS 'true once UEK has been generated and wrapped';
-- =========================================
-- 2. AUTH
@@ -107,9 +151,59 @@ CREATE INDEX IF NOT EXISTS idx_team_members_user ON team_members(user_id);
-- =========================================
-- 4. PROVIDER CONFIGS (replaces api_configs)
-- 4. GROUPS (v0.16.0)
-- =========================================
-- Pure access-control lists. Decouple resource visibility from team membership.
-- Teams = organizational structure. Roles = vertical permissions.
-- Groups = who can access what (cross-cutting).
CREATE TABLE IF NOT EXISTS groups (
id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
name VARCHAR(100) NOT NULL,
description TEXT NOT NULL DEFAULT '',
scope VARCHAR(20) NOT NULL DEFAULT 'global'
CHECK (scope IN ('global', 'team')),
team_id UUID REFERENCES teams(id) ON DELETE CASCADE,
created_by UUID NOT NULL REFERENCES users(id),
created_at TIMESTAMPTZ DEFAULT NOW(),
updated_at TIMESTAMPTZ DEFAULT NOW(),
-- Global groups: team_id must be NULL
-- Team groups: team_id must be set
CONSTRAINT groups_scope_team CHECK (
(scope = 'global' AND team_id IS NULL) OR
(scope = 'team' AND team_id IS NOT NULL)
)
);
-- Unique name within scope (global names globally unique,
-- team names unique within team)
CREATE UNIQUE INDEX IF NOT EXISTS idx_groups_name_scope
ON groups(name, COALESCE(team_id, '00000000-0000-0000-0000-000000000000'));
DROP TRIGGER IF EXISTS groups_updated_at ON groups;
CREATE TRIGGER groups_updated_at BEFORE UPDATE ON groups
FOR EACH ROW EXECUTE FUNCTION update_updated_at();
COMMENT ON TABLE groups IS 'Access-control groups. Decouple resource visibility from team membership.';
COMMENT ON COLUMN groups.scope IS 'global: admin-managed, can span teams. team: team-admin-managed, team-internal.';
CREATE TABLE IF NOT EXISTS group_members (
id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
group_id UUID NOT NULL REFERENCES groups(id) ON DELETE CASCADE,
user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
added_by UUID NOT NULL REFERENCES users(id),
added_at TIMESTAMPTZ DEFAULT NOW(),
UNIQUE(group_id, user_id)
);
CREATE INDEX IF NOT EXISTS idx_group_members_group ON group_members(group_id);
CREATE INDEX IF NOT EXISTS idx_group_members_user ON group_members(user_id);
-- =========================================
-- 5. PROVIDER CONFIGS
-- =========================================
-- Explicit scope enum replaces nullable column tri-state.
-- scope='global': admin-managed, visible to all users (owner_id IS NULL)
-- scope='team': team admin-managed (owner_id = teams.id)
-- scope='personal': user's own keys (owner_id = users.id)
@@ -122,7 +216,12 @@ CREATE TABLE IF NOT EXISTS provider_configs (
name VARCHAR(100) NOT NULL,
provider VARCHAR(50) NOT NULL,
endpoint TEXT NOT NULL,
api_key_enc TEXT,
-- Encrypted API key (AES-256-GCM)
api_key_enc BYTEA,
key_nonce BYTEA,
key_scope TEXT NOT NULL DEFAULT 'global',
model_default VARCHAR(100),
config JSONB DEFAULT '{}'::jsonb,
headers JSONB DEFAULT '{}'::jsonb,
@@ -142,22 +241,26 @@ CREATE TRIGGER provider_configs_updated_at BEFORE UPDATE ON provider_configs
COMMENT ON COLUMN provider_configs.scope IS 'global=admin-managed, team=team-scoped, personal=user BYOK';
COMMENT ON COLUMN provider_configs.owner_id IS 'NULL for global; teams.id for team scope; users.id for personal scope';
COMMENT ON COLUMN provider_configs.api_key_enc IS 'AES-256-GCM encrypted API key (BYTEA)';
COMMENT ON COLUMN provider_configs.key_nonce IS 'AES-GCM nonce for api_key_enc';
COMMENT ON COLUMN provider_configs.key_scope IS 'Encryption tier: global/team use env key, personal uses UEK';
COMMENT ON COLUMN provider_configs.headers IS 'Custom HTTP headers (e.g. OpenRouter HTTP-Referer)';
COMMENT ON COLUMN provider_configs.settings IS 'Provider-specific params (e.g. Venice web_search, OpenRouter route)';
COMMENT ON COLUMN provider_configs.is_private IS 'Data stays on-prem (local/self-hosted provider)';
-- =========================================
-- 5. MODEL CATALOG (replaces model_configs)
-- 6. MODEL CATALOG
-- =========================================
-- Intrinsic capabilities for models the system knows about.
-- Hidden by default — admin must enable.
-- Disabled by default — admin must enable.
CREATE TABLE IF NOT EXISTS model_catalog (
id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
provider_config_id UUID NOT NULL REFERENCES provider_configs(id) ON DELETE CASCADE,
model_id TEXT NOT NULL,
display_name TEXT,
model_type VARCHAR(20) DEFAULT 'chat',
capabilities JSONB NOT NULL DEFAULT '{}',
pricing JSONB,
visibility VARCHAR(10) DEFAULT 'disabled'
@@ -170,28 +273,18 @@ CREATE TABLE IF NOT EXISTS model_catalog (
CREATE INDEX IF NOT EXISTS idx_model_catalog_provider ON model_catalog(provider_config_id);
CREATE INDEX IF NOT EXISTS idx_model_catalog_enabled ON model_catalog(visibility) WHERE visibility = 'enabled';
-- Fix CHECK constraint and default for existing databases (idempotent)
DO $$ BEGIN
ALTER TABLE model_catalog DROP CONSTRAINT IF EXISTS model_catalog_visibility_check;
-- Remap old values before adding new constraint
UPDATE model_catalog SET visibility = 'enabled' WHERE visibility = 'visible';
UPDATE model_catalog SET visibility = 'disabled' WHERE visibility = 'hidden';
ALTER TABLE model_catalog ADD CONSTRAINT model_catalog_visibility_check
CHECK (visibility IN ('enabled', 'disabled', 'team'));
ALTER TABLE model_catalog ALTER COLUMN visibility SET DEFAULT 'disabled';
EXCEPTION WHEN OTHERS THEN NULL;
END $$;
CREATE INDEX IF NOT EXISTS idx_model_catalog_type ON model_catalog(model_type);
DROP TRIGGER IF EXISTS model_catalog_updated_at ON model_catalog;
CREATE TRIGGER model_catalog_updated_at BEFORE UPDATE ON model_catalog
FOR EACH ROW EXECUTE FUNCTION update_updated_at();
COMMENT ON COLUMN model_catalog.visibility IS 'hidden by default — admin must enable for global models';
COMMENT ON COLUMN model_catalog.visibility IS 'disabled by default — admin must enable for global models';
COMMENT ON COLUMN model_catalog.model_type IS 'chat, embedding, image — from provider API sync';
COMMENT ON COLUMN model_catalog.capabilities IS 'Intrinsic: {"streaming","tool_calling","vision","thinking","reasoning","code_optimized","web_search","max_context","max_output_tokens"}';
-- =========================================
-- 6. PERSONAS (replaces model_presets)
-- 7. PERSONAS
-- =========================================
CREATE TABLE IF NOT EXISTS personas (
@@ -239,8 +332,10 @@ COMMENT ON COLUMN personas.is_shared IS 'Personal Personas shared with others (r
-- =========================================
-- 7. PERSONA GRANTS (extensible resource binding)
-- 8. PERSONA GRANTS (what a Persona can do)
-- =========================================
-- Controls tools, KBs, and API endpoints that a Persona has access TO.
-- NOT to be confused with resource_grants (who can USE a resource).
CREATE TABLE IF NOT EXISTS persona_grants (
id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
@@ -255,13 +350,53 @@ CREATE TABLE IF NOT EXISTS persona_grants (
CREATE INDEX IF NOT EXISTS idx_persona_grants_persona ON persona_grants(persona_id);
CREATE INDEX IF NOT EXISTS idx_persona_grants_type ON persona_grants(grant_type);
COMMENT ON COLUMN persona_grants.grant_type IS 'Extensible: tool, knowledge_base (future), api_endpoint (future)';
COMMENT ON TABLE persona_grants IS 'What a Persona can do: tools it can call, KBs it can search, etc.';
COMMENT ON COLUMN persona_grants.grant_type IS 'Extensible: tool, knowledge_base, api_endpoint';
COMMENT ON COLUMN persona_grants.grant_ref IS 'tool: function name. knowledge_base: UUID. api_endpoint: identifier.';
COMMENT ON COLUMN persona_grants.config IS 'Type-specific config, e.g. {"read_only": true} for KB grants';
-- =========================================
-- 8. PLATFORM POLICIES (replaces scattered global_settings checks)
-- 9. RESOURCE GRANTS (v0.16.0 — who can USE a resource)
-- =========================================
-- Controls which users (via groups) can access a resource.
-- NOT to be confused with persona_grants (what a Persona can do).
--
-- persona_grants: "CodeBot can use calculator" (Persona → tool)
-- resource_grants: "Engineering can use CodeBot" (group → Persona)
CREATE TABLE IF NOT EXISTS resource_grants (
id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
resource_type VARCHAR(30) NOT NULL
CHECK (resource_type IN ('persona', 'knowledge_base')),
resource_id UUID NOT NULL,
grant_scope VARCHAR(20) NOT NULL DEFAULT 'team_only'
CHECK (grant_scope IN ('team_only', 'global', 'groups')),
granted_groups UUID[] NOT NULL DEFAULT '{}',
created_by UUID NOT NULL REFERENCES users(id),
created_at TIMESTAMPTZ DEFAULT NOW(),
updated_at TIMESTAMPTZ DEFAULT NOW(),
-- One grant row per resource
UNIQUE(resource_type, resource_id)
);
CREATE INDEX IF NOT EXISTS idx_resource_grants_resource
ON resource_grants(resource_type, resource_id);
CREATE INDEX IF NOT EXISTS idx_resource_grants_groups
ON resource_grants USING gin(granted_groups);
DROP TRIGGER IF EXISTS resource_grants_updated_at ON resource_grants;
CREATE TRIGGER resource_grants_updated_at BEFORE UPDATE ON resource_grants
FOR EACH ROW EXECUTE FUNCTION update_updated_at();
COMMENT ON TABLE resource_grants IS 'Who can USE a resource (personas, KBs). Cross-team access via groups.';
COMMENT ON COLUMN resource_grants.grant_scope IS 'team_only: existing team behavior. global: all users. groups: specific group list.';
COMMENT ON COLUMN resource_grants.granted_groups IS 'UUID array of group IDs. Only meaningful when grant_scope = groups.';
-- =========================================
-- 10. PLATFORM POLICIES
-- =========================================
CREATE TABLE IF NOT EXISTS platform_policies (
@@ -285,10 +420,8 @@ COMMENT ON TABLE platform_policies IS 'Global admin switches controlling platfor
-- =========================================
-- 9. GLOBAL SETTINGS (non-policy config)
-- 11. GLOBAL SETTINGS (non-policy config)
-- =========================================
-- Retained for banner config, site branding, etc.
-- Policy-like keys move to platform_policies.
CREATE TABLE IF NOT EXISTS global_settings (
key VARCHAR(100) PRIMARY KEY,
@@ -297,7 +430,6 @@ CREATE TABLE IF NOT EXISTS global_settings (
updated_by UUID REFERENCES users(id)
);
-- Seed defaults
INSERT INTO global_settings (key, value) VALUES
('registration', '{"enabled": true}'::jsonb),
('site', '{"name": "Chat Switchboard", "tagline": "Multi-Model AI Chat"}'::jsonb),
@@ -315,12 +447,17 @@ INSERT INTO global_settings (key, value) VALUES
"production": { "text": "PRODUCTION", "bg": "#c8102e", "fg": "#ffffff" },
"training": { "text": "TRAINING", "bg": "#ff8c00", "fg": "#000000" },
"demo": { "text": "DEMO", "bg": "#fce83a", "fg": "#000000" }
}'::jsonb),
('model_roles', '{
"utility": { "primary": null, "fallback": null },
"embedding": { "primary": null, "fallback": null },
"generation": { "primary": null, "fallback": null }
}'::jsonb)
ON CONFLICT (key) DO NOTHING;
-- =========================================
-- 10. USER MODEL SETTINGS (replaces user_model_preferences)
-- 12. USER MODEL SETTINGS
-- =========================================
CREATE TABLE IF NOT EXISTS user_model_settings (
@@ -343,7 +480,7 @@ CREATE TRIGGER user_model_settings_updated_at BEFORE UPDATE ON user_model_settin
-- =========================================
-- 11. CHANNELS (unified chats)
-- 13. CHANNELS
-- =========================================
CREATE TABLE IF NOT EXISTS channels (
@@ -358,8 +495,8 @@ CREATE TABLE IF NOT EXISTS channels (
provider_config_id UUID REFERENCES provider_configs(id) ON DELETE SET NULL,
is_archived BOOLEAN DEFAULT false,
is_pinned BOOLEAN DEFAULT false,
folder_id UUID, -- FK added after folders table
folder TEXT, -- backward compat: simple text folder name
folder_id UUID, -- FK added after folders table created
folder TEXT, -- simple text folder name (frontend-managed)
team_id UUID REFERENCES teams(id) ON DELETE SET NULL,
settings JSONB DEFAULT '{}'::jsonb,
tags TEXT[],
@@ -380,7 +517,7 @@ COMMENT ON COLUMN channels.type IS 'direct=1:1 AI chat, group=multi-model, chann
-- =========================================
-- 12. MESSAGES (with tree/forking support)
-- 14. MESSAGES (with tree/forking support)
-- =========================================
CREATE TABLE IF NOT EXISTS messages (
@@ -415,7 +552,7 @@ COMMENT ON COLUMN messages.participant_id IS 'user UUID or model identifier stri
-- =========================================
-- 13. CHANNEL MEMBERS & MODELS
-- 15. CHANNEL MEMBERS & MODELS
-- =========================================
CREATE TABLE IF NOT EXISTS channel_members (
@@ -448,7 +585,7 @@ CREATE INDEX IF NOT EXISTS idx_channel_models_channel ON channel_models(channel_
-- =========================================
-- 14. CHANNEL CURSORS (forking navigation)
-- 16. CHANNEL CURSORS (forking navigation)
-- =========================================
CREATE TABLE IF NOT EXISTS channel_cursors (
@@ -465,8 +602,9 @@ CREATE INDEX IF NOT EXISTS idx_channel_cursors_user ON channel_cursors(user_id);
-- =========================================
-- 15. FOLDERS & PROJECTS
-- 17. FOLDERS
-- =========================================
-- Channel folders. Note: projects table deferred to v0.19.0.
CREATE TABLE IF NOT EXISTS folders (
id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
@@ -485,41 +623,20 @@ DROP TRIGGER IF EXISTS folders_updated_at ON folders;
CREATE TRIGGER folders_updated_at BEFORE UPDATE ON folders
FOR EACH ROW EXECUTE FUNCTION update_updated_at();
-- Now add the FK from channels
-- Deferred FK: channels.folder_id → folders.id
DO $$ BEGIN
ALTER TABLE channels ADD CONSTRAINT fk_channels_folder
FOREIGN KEY (folder_id) REFERENCES folders(id) ON DELETE SET NULL;
EXCEPTION WHEN duplicate_object THEN NULL;
IF NOT EXISTS (
SELECT 1 FROM pg_constraint WHERE conname = 'fk_channels_folder'
) THEN
ALTER TABLE channels ADD CONSTRAINT fk_channels_folder
FOREIGN KEY (folder_id) REFERENCES folders(id) ON DELETE SET NULL;
END IF;
END $$;
CREATE INDEX IF NOT EXISTS idx_channels_folder ON channels(folder_id) WHERE folder_id IS NOT NULL;
CREATE TABLE IF NOT EXISTS projects (
id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
name VARCHAR(200) NOT NULL,
description TEXT,
color VARCHAR(7),
created_at TIMESTAMPTZ DEFAULT NOW(),
updated_at TIMESTAMPTZ DEFAULT NOW()
);
CREATE INDEX IF NOT EXISTS idx_projects_user ON projects(user_id);
DROP TRIGGER IF EXISTS projects_updated_at ON projects;
CREATE TRIGGER projects_updated_at BEFORE UPDATE ON projects
FOR EACH ROW EXECUTE FUNCTION update_updated_at();
CREATE TABLE IF NOT EXISTS project_channels (
project_id UUID NOT NULL REFERENCES projects(id) ON DELETE CASCADE,
channel_id UUID NOT NULL REFERENCES channels(id) ON DELETE CASCADE,
added_at TIMESTAMPTZ DEFAULT NOW(),
PRIMARY KEY (project_id, channel_id)
);
CREATE INDEX IF NOT EXISTS idx_project_channels_channel ON project_channels(channel_id);
-- =========================================
-- 16. NOTES
-- 18. NOTES
-- =========================================
CREATE TABLE IF NOT EXISTS notes (
@@ -533,6 +650,7 @@ CREATE TABLE IF NOT EXISTS notes (
source_channel_id UUID REFERENCES channels(id) ON DELETE SET NULL,
team_id UUID REFERENCES teams(id) ON DELETE SET NULL,
search_vector TSVECTOR,
embedding VECTOR(3072),
created_at TIMESTAMPTZ DEFAULT NOW(),
updated_at TIMESTAMPTZ DEFAULT NOW()
);
@@ -562,7 +680,7 @@ CREATE TRIGGER notes_search_update
-- =========================================
-- 17. AUDIT LOG
-- 19. AUDIT LOG
-- =========================================
CREATE TABLE IF NOT EXISTS audit_log (
@@ -583,3 +701,184 @@ CREATE INDEX IF NOT EXISTS idx_audit_log_resource ON audit_log(resource_type, re
CREATE INDEX IF NOT EXISTS idx_audit_log_action ON audit_log(action);
COMMENT ON TABLE audit_log IS 'Immutable audit trail of all mutating operations';
-- =========================================
-- 20. USAGE TRACKING
-- =========================================
CREATE TABLE IF NOT EXISTS usage_log (
id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
channel_id UUID REFERENCES channels(id) ON DELETE SET NULL,
user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
provider_config_id UUID REFERENCES provider_configs(id) ON DELETE SET NULL,
provider_scope TEXT NOT NULL DEFAULT 'global',
model_id TEXT NOT NULL,
role TEXT, -- NULL = user chat, 'utility', 'embedding', 'generation'
prompt_tokens INT NOT NULL DEFAULT 0,
completion_tokens INT NOT NULL DEFAULT 0,
cache_creation_tokens INT NOT NULL DEFAULT 0,
cache_read_tokens INT NOT NULL DEFAULT 0,
cost_input NUMERIC(12,6),
cost_output NUMERIC(12,6),
created_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
);
CREATE INDEX IF NOT EXISTS idx_usage_log_user ON usage_log(user_id);
CREATE INDEX IF NOT EXISTS idx_usage_log_created ON usage_log(created_at);
CREATE INDEX IF NOT EXISTS idx_usage_log_provider ON usage_log(provider_config_id);
CREATE INDEX IF NOT EXISTS idx_usage_log_model ON usage_log(model_id);
CREATE INDEX IF NOT EXISTS idx_usage_log_scope ON usage_log(provider_scope);
-- =========================================
-- 21. MODEL PRICING
-- =========================================
CREATE TABLE IF NOT EXISTS model_pricing (
id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
provider_config_id UUID NOT NULL REFERENCES provider_configs(id) ON DELETE CASCADE,
model_id TEXT NOT NULL,
input_per_m NUMERIC(10,6),
output_per_m NUMERIC(10,6),
cache_create_per_m NUMERIC(10,6),
cache_read_per_m NUMERIC(10,6),
currency TEXT NOT NULL DEFAULT 'USD',
source TEXT NOT NULL DEFAULT 'manual',
updated_at TIMESTAMPTZ DEFAULT NOW(),
updated_by UUID REFERENCES users(id),
UNIQUE(provider_config_id, model_id)
);
-- =========================================
-- 22. EXTENSIONS
-- =========================================
CREATE TABLE IF NOT EXISTS extensions (
id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
ext_id VARCHAR(100) NOT NULL UNIQUE,
name VARCHAR(200) NOT NULL,
version VARCHAR(50) NOT NULL DEFAULT '0.0.0',
tier VARCHAR(20) NOT NULL DEFAULT 'browser',
description TEXT NOT NULL DEFAULT '',
author VARCHAR(200) NOT NULL DEFAULT '',
manifest JSONB NOT NULL DEFAULT '{}',
is_system BOOLEAN NOT NULL DEFAULT false,
is_enabled BOOLEAN NOT NULL DEFAULT true,
scope VARCHAR(20) NOT NULL DEFAULT 'global',
team_id UUID REFERENCES teams(id) ON DELETE CASCADE,
installed_by UUID REFERENCES users(id) ON DELETE SET NULL,
created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
updated_at TIMESTAMPTZ NOT NULL DEFAULT now()
);
CREATE INDEX IF NOT EXISTS idx_extensions_tier ON extensions(tier);
CREATE INDEX IF NOT EXISTS idx_extensions_enabled ON extensions(is_enabled) WHERE is_enabled = true;
CREATE TABLE IF NOT EXISTS extension_user_settings (
extension_id UUID NOT NULL REFERENCES extensions(id) ON DELETE CASCADE,
user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
settings JSONB NOT NULL DEFAULT '{}',
is_enabled BOOLEAN NOT NULL DEFAULT true,
PRIMARY KEY (extension_id, user_id)
);
-- =========================================
-- 23. ATTACHMENTS
-- =========================================
CREATE TABLE IF NOT EXISTS attachments (
id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
channel_id UUID NOT NULL REFERENCES channels(id) ON DELETE CASCADE,
user_id UUID NOT NULL REFERENCES users(id),
message_id UUID REFERENCES messages(id) ON DELETE SET NULL,
filename VARCHAR(255) NOT NULL,
content_type VARCHAR(127) NOT NULL,
size_bytes BIGINT NOT NULL,
storage_key TEXT NOT NULL,
extracted_text TEXT,
metadata JSONB DEFAULT '{}'::jsonb,
created_at TIMESTAMPTZ DEFAULT NOW()
);
CREATE INDEX IF NOT EXISTS idx_attachments_channel ON attachments(channel_id);
CREATE INDEX IF NOT EXISTS idx_attachments_user_size ON attachments(user_id);
CREATE INDEX IF NOT EXISTS idx_attachments_message ON attachments(message_id) WHERE message_id IS NOT NULL;
CREATE INDEX IF NOT EXISTS idx_attachments_orphan ON attachments(created_at) WHERE message_id IS NULL;
-- =========================================
-- 24. KNOWLEDGE BASES
-- =========================================
CREATE TABLE IF NOT EXISTS knowledge_bases (
id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
name TEXT NOT NULL,
description TEXT NOT NULL DEFAULT '',
scope TEXT NOT NULL DEFAULT 'global',
owner_id UUID REFERENCES users(id) ON DELETE CASCADE,
team_id UUID REFERENCES teams(id) ON DELETE CASCADE,
embedding_config JSONB NOT NULL DEFAULT '{}',
document_count INT NOT NULL DEFAULT 0,
chunk_count INT NOT NULL DEFAULT 0,
total_bytes BIGINT NOT NULL DEFAULT 0,
status TEXT NOT NULL DEFAULT 'active',
created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
updated_at TIMESTAMPTZ NOT NULL DEFAULT now(),
CONSTRAINT kb_scope_check CHECK (
(scope = 'global' AND owner_id IS NULL) OR
(scope = 'team' AND team_id IS NOT NULL) OR
(scope = 'personal' AND owner_id IS NOT NULL)
)
);
CREATE INDEX IF NOT EXISTS idx_kb_scope ON knowledge_bases(scope);
CREATE INDEX IF NOT EXISTS idx_kb_owner ON knowledge_bases(owner_id) WHERE owner_id IS NOT NULL;
CREATE INDEX IF NOT EXISTS idx_kb_team ON knowledge_bases(team_id) WHERE team_id IS NOT NULL;
CREATE TABLE IF NOT EXISTS kb_documents (
id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
kb_id UUID NOT NULL REFERENCES knowledge_bases(id) ON DELETE CASCADE,
filename TEXT NOT NULL,
content_type TEXT NOT NULL,
size_bytes BIGINT NOT NULL,
storage_key TEXT NOT NULL,
extracted_text TEXT,
chunk_count INT NOT NULL DEFAULT 0,
status TEXT NOT NULL DEFAULT 'pending',
error TEXT,
uploaded_by UUID NOT NULL REFERENCES users(id),
created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
updated_at TIMESTAMPTZ NOT NULL DEFAULT now()
);
CREATE INDEX IF NOT EXISTS idx_kbdoc_kb ON kb_documents(kb_id);
CREATE TABLE IF NOT EXISTS kb_chunks (
id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
kb_id UUID NOT NULL REFERENCES knowledge_bases(id) ON DELETE CASCADE,
document_id UUID NOT NULL REFERENCES kb_documents(id) ON DELETE CASCADE,
chunk_index INT NOT NULL,
content TEXT NOT NULL,
token_count INT NOT NULL DEFAULT 0,
embedding VECTOR(3072),
metadata JSONB NOT NULL DEFAULT '{}',
created_at TIMESTAMPTZ NOT NULL DEFAULT now()
);
CREATE INDEX IF NOT EXISTS idx_kbchunk_kb ON kb_chunks(kb_id);
CREATE INDEX IF NOT EXISTS idx_kbchunk_doc ON kb_chunks(document_id);
-- NOTE: IVFFlat index for similarity search created after first data load
-- (needs rows to train). The ingest handler creates it.
CREATE TABLE IF NOT EXISTS channel_knowledge_bases (
channel_id UUID NOT NULL REFERENCES channels(id) ON DELETE CASCADE,
kb_id UUID NOT NULL REFERENCES knowledge_bases(id) ON DELETE CASCADE,
enabled BOOLEAN NOT NULL DEFAULT true,
added_at TIMESTAMPTZ NOT NULL DEFAULT now(),
PRIMARY KEY (channel_id, kb_id)
);

14
server/database/migrations/002_ci_username.sql
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-- 002_ci_username.sql
-- Case-insensitive unique indexes for username and email.
-- Replaces the default UNIQUE constraint (which is case-sensitive).
-- Normalize existing rows to lowercase first
UPDATE users SET username = LOWER(username) WHERE username != LOWER(username);
UPDATE users SET email = LOWER(email) WHERE email != LOWER(email);
-- Drop old case-sensitive unique constraints and add case-insensitive indexes
ALTER TABLE users DROP CONSTRAINT IF EXISTS users_username_key;
ALTER TABLE users DROP CONSTRAINT IF EXISTS users_email_key;
CREATE UNIQUE INDEX IF NOT EXISTS users_username_ci ON users (LOWER(username));
CREATE UNIQUE INDEX IF NOT EXISTS users_email_ci ON users (LOWER(email));

48
server/database/migrations/003_vault.sql
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-- 003_vault.sql — API Key Encryption + User Vault
-- v0.9.4: Two-tier encryption for API keys
--
-- Phase 1 (this migration): Add new columns alongside existing plaintext.
-- Phase 2 (Go startup): Backfill — encrypt plaintext keys, generate UEKs.
-- Phase 3 (future): Drop api_key_plain after confirmed stable.
-- =========================================
-- 1. USERS — Vault support
-- =========================================
-- Per-user encryption key (UEK) wrapped with password-derived key (Argon2id).
-- UEK protects personal BYOK API keys. Platform admin cannot recover without
-- the user's password.
ALTER TABLE users ADD COLUMN IF NOT EXISTS encrypted_uek BYTEA;
ALTER TABLE users ADD COLUMN IF NOT EXISTS uek_salt BYTEA;
ALTER TABLE users ADD COLUMN IF NOT EXISTS uek_nonce BYTEA;
ALTER TABLE users ADD COLUMN IF NOT EXISTS vault_set BOOLEAN NOT NULL DEFAULT false;
COMMENT ON COLUMN users.encrypted_uek IS 'UEK encrypted with Argon2id(password)-derived key';
COMMENT ON COLUMN users.uek_salt IS 'Argon2id salt for UEK derivation';
COMMENT ON COLUMN users.uek_nonce IS 'AES-GCM nonce for UEK wrapping';
COMMENT ON COLUMN users.vault_set IS 'true once UEK has been generated and wrapped';
-- =========================================
-- 2. PROVIDER_CONFIGS — Encrypted key storage
-- =========================================
-- Rename current plaintext column, add encrypted BYTEA columns.
-- Backfill happens in Go (needs ENCRYPTION_KEY env var).
-- Keep plaintext temporarily for backfill; Go startup reads it, encrypts,
-- writes to new columns, then NULLs it out.
ALTER TABLE provider_configs RENAME COLUMN api_key_enc TO api_key_plain;
ALTER TABLE provider_configs ADD COLUMN IF NOT EXISTS api_key_enc BYTEA;
ALTER TABLE provider_configs ADD COLUMN IF NOT EXISTS key_nonce BYTEA;
ALTER TABLE provider_configs ADD COLUMN IF NOT EXISTS key_scope TEXT;
-- Backfill key_scope from existing scope column (safe default)
UPDATE provider_configs SET key_scope = scope WHERE key_scope IS NULL;
-- Now make it NOT NULL with default
ALTER TABLE provider_configs ALTER COLUMN key_scope SET NOT NULL;
ALTER TABLE provider_configs ALTER COLUMN key_scope SET DEFAULT 'global';
COMMENT ON COLUMN provider_configs.api_key_plain IS 'DEPRECATED: plaintext key, cleared after vault backfill';
COMMENT ON COLUMN provider_configs.api_key_enc IS 'AES-256-GCM encrypted API key (BYTEA)';
COMMENT ON COLUMN provider_configs.key_nonce IS 'AES-GCM nonce for api_key_enc';
COMMENT ON COLUMN provider_configs.key_scope IS 'Encryption tier: global/team use env key, personal uses UEK';

64
server/database/migrations/004_roles_usage.sql
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-- 004_roles_usage.sql
-- v0.10.0: Model Roles + Usage Tracking
--
-- New tables: usage_log, model_pricing
-- Seed: model_roles in global_settings
-- ── Model roles seed ──────────────────────────
-- Uses existing global_settings table. No new tables for roles.
-- Team overrides go in teams.settings JSONB (existing column).
INSERT INTO global_settings (key, value) VALUES
('model_roles', '{
"utility": { "primary": null, "fallback": null },
"embedding": { "primary": null, "fallback": null },
"generation": { "primary": null, "fallback": null }
}'::jsonb)
ON CONFLICT (key) DO NOTHING;
-- ── Usage tracking ────────────────────────────
-- Every completion (streaming and non-streaming) logs token counts and cost.
-- Cost is calculated at insert time from model_pricing.
-- provider_scope is denormalized for efficient admin filtering (excludes BYOK).
CREATE TABLE IF NOT EXISTS usage_log (
id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
channel_id UUID REFERENCES channels(id) ON DELETE SET NULL,
user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
provider_config_id UUID REFERENCES provider_configs(id) ON DELETE SET NULL,
provider_scope TEXT NOT NULL DEFAULT 'global',
model_id TEXT NOT NULL,
role TEXT, -- NULL = user chat, 'utility', 'embedding', 'generation'
prompt_tokens INT NOT NULL DEFAULT 0,
completion_tokens INT NOT NULL DEFAULT 0,
cache_creation_tokens INT NOT NULL DEFAULT 0,
cache_read_tokens INT NOT NULL DEFAULT 0,
cost_input NUMERIC(12,6),
cost_output NUMERIC(12,6),
created_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
);
CREATE INDEX IF NOT EXISTS idx_usage_log_user ON usage_log(user_id);
CREATE INDEX IF NOT EXISTS idx_usage_log_created ON usage_log(created_at);
CREATE INDEX IF NOT EXISTS idx_usage_log_provider ON usage_log(provider_config_id);
CREATE INDEX IF NOT EXISTS idx_usage_log_model ON usage_log(model_id);
CREATE INDEX IF NOT EXISTS idx_usage_log_scope ON usage_log(provider_scope);
-- ── Model pricing ─────────────────────────────
-- Two sources: 'catalog' (auto-populated from provider API sync) and
-- 'manual' (admin override). Manual entries are never overwritten by sync.
CREATE TABLE IF NOT EXISTS model_pricing (
id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
provider_config_id UUID NOT NULL REFERENCES provider_configs(id) ON DELETE CASCADE,
model_id TEXT NOT NULL,
input_per_m NUMERIC(10,6),
output_per_m NUMERIC(10,6),
cache_create_per_m NUMERIC(10,6),
cache_read_per_m NUMERIC(10,6),
currency TEXT NOT NULL DEFAULT 'USD',
source TEXT NOT NULL DEFAULT 'manual',
updated_at TIMESTAMPTZ DEFAULT NOW(),
updated_by UUID REFERENCES users(id),
UNIQUE(provider_config_id, model_id)
);

14
server/database/migrations/005_model_type.sql
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-- Migration 005: Add model_type to model_catalog
--
-- Providers like Venice return a "type" field per model (e.g. "text", "embedding", "image").
-- This column captures that classification so role dropdowns can filter appropriately:
-- - "embedding" role → only embedding models
-- - "utility" role → only chat/text models
--
-- Default is "chat" (the overwhelming majority of models). Provider sync will
-- populate from the wire response when available — NO hardcoding of model types.
ALTER TABLE model_catalog ADD COLUMN IF NOT EXISTS model_type VARCHAR(20) DEFAULT 'chat';
-- Index for role UI filtering (e.g. "show me all embedding models for this provider")
CREATE INDEX IF NOT EXISTS idx_model_catalog_type ON model_catalog(model_type);

41
server/database/migrations/006_extensions.sql
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-- Migration 006: Extension system tables
--
-- Extensions are installable plugins that add renderers, tools, surfaces,
-- and event handlers. Three tiers: browser (JS), starlark (sandbox),
-- sidecar (container). Browser tier ships first (v0.11.0).
--
-- See EXTENSIONS.md for full spec.
-- ── Extension registry ──────────────────────────
CREATE TABLE IF NOT EXISTS extensions (
id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
ext_id VARCHAR(100) NOT NULL UNIQUE, -- manifest id (e.g. "collapsible-code")
name VARCHAR(200) NOT NULL, -- human label
version VARCHAR(50) NOT NULL DEFAULT '0.0.0',
tier VARCHAR(20) NOT NULL DEFAULT 'browser', -- browser | starlark | sidecar
description TEXT NOT NULL DEFAULT '',
author VARCHAR(200) NOT NULL DEFAULT '',
manifest JSONB NOT NULL DEFAULT '{}', -- full manifest JSON
is_system BOOLEAN NOT NULL DEFAULT false, -- admin-pushed, users can't disable
is_enabled BOOLEAN NOT NULL DEFAULT true, -- global enable/disable
scope VARCHAR(20) NOT NULL DEFAULT 'global', -- global | team | personal
team_id UUID REFERENCES teams(id) ON DELETE CASCADE,
installed_by UUID REFERENCES users(id) ON DELETE SET NULL,
created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
updated_at TIMESTAMPTZ NOT NULL DEFAULT now()
);
-- For bundled extensions that ship with core
CREATE INDEX IF NOT EXISTS idx_extensions_tier ON extensions(tier);
CREATE INDEX IF NOT EXISTS idx_extensions_enabled ON extensions(is_enabled) WHERE is_enabled = true;
-- ── Per-user extension settings ─────────────────
CREATE TABLE IF NOT EXISTS extension_user_settings (
extension_id UUID NOT NULL REFERENCES extensions(id) ON DELETE CASCADE,
user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
settings JSONB NOT NULL DEFAULT '{}', -- user's config values
is_enabled BOOLEAN NOT NULL DEFAULT true, -- per-user toggle
PRIMARY KEY (extension_id, user_id)
);

32
server/database/migrations/007_attachments.sql
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-- 007_attachments.sql
-- File attachments for chat messages (v0.12.0)
--
-- Blobs live in object storage (PVC / S3). This table holds metadata.
-- Access control: always join through channels — attachments inherit
-- channel membership as their access boundary.
CREATE TABLE IF NOT EXISTS attachments (
id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
channel_id UUID NOT NULL REFERENCES channels(id) ON DELETE CASCADE,
user_id UUID NOT NULL REFERENCES users(id),
message_id UUID REFERENCES messages(id) ON DELETE SET NULL,
filename VARCHAR(255) NOT NULL,
content_type VARCHAR(127) NOT NULL,
size_bytes BIGINT NOT NULL,
storage_key TEXT NOT NULL,
extracted_text TEXT,
metadata JSONB DEFAULT '{}'::jsonb,
created_at TIMESTAMPTZ DEFAULT NOW()
);
-- Primary access pattern: find attachments for a channel (auth check joins here)
CREATE INDEX IF NOT EXISTS idx_attachments_channel ON attachments(channel_id);
-- Quota calculation: SUM(size_bytes) WHERE user_id = $1
CREATE INDEX IF NOT EXISTS idx_attachments_user_size ON attachments(user_id);
-- Find attachments for a specific message
CREATE INDEX IF NOT EXISTS idx_attachments_message ON attachments(message_id) WHERE message_id IS NOT NULL;
-- Orphan cleanup: find unlinked attachments older than threshold
CREATE INDEX IF NOT EXISTS idx_attachments_orphan ON attachments(created_at) WHERE message_id IS NULL;

99
server/database/migrations/008_knowledge_bases.sql
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-- 008_knowledge_bases.sql
-- Knowledge Bases: KB metadata, documents, chunks, channel links.
-- Requires: pgvector extension already installed (via db-bootstrap.sh).
-- ── Knowledge Bases ──────────────────────────
CREATE TABLE IF NOT EXISTS knowledge_bases (
id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
name TEXT NOT NULL,
description TEXT NOT NULL DEFAULT '',
scope TEXT NOT NULL DEFAULT 'global', -- global, team, personal
owner_id UUID REFERENCES users(id) ON DELETE CASCADE,
team_id UUID REFERENCES teams(id) ON DELETE CASCADE,
-- Snapshot of embedding config at creation time.
-- Changing the model requires a full re-embed (rebuild endpoint).
-- { "provider_config_id": "...", "model_id": "...", "dimensions": 1536 }
embedding_config JSONB NOT NULL DEFAULT '{}',
-- Denormalized stats, updated by ingest pipeline.
document_count INT NOT NULL DEFAULT 0,
chunk_count INT NOT NULL DEFAULT 0,
total_bytes BIGINT NOT NULL DEFAULT 0,
status TEXT NOT NULL DEFAULT 'active', -- active, processing, error
created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
updated_at TIMESTAMPTZ NOT NULL DEFAULT now(),
CONSTRAINT kb_scope_check CHECK (
(scope = 'global' AND owner_id IS NULL) OR
(scope = 'team' AND team_id IS NOT NULL) OR
(scope = 'personal' AND owner_id IS NOT NULL)
)
);
CREATE INDEX IF NOT EXISTS idx_kb_scope ON knowledge_bases(scope);
CREATE INDEX IF NOT EXISTS idx_kb_owner ON knowledge_bases(owner_id) WHERE owner_id IS NOT NULL;
CREATE INDEX IF NOT EXISTS idx_kb_team ON knowledge_bases(team_id) WHERE team_id IS NOT NULL;
-- ── KB Documents ─────────────────────────────
-- One row per uploaded file. Blobs live in ObjectStore under:
-- kb/{kb_id}/{doc_id}_{filename}
CREATE TABLE IF NOT EXISTS kb_documents (
id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
kb_id UUID NOT NULL REFERENCES knowledge_bases(id) ON DELETE CASCADE,
filename TEXT NOT NULL,
content_type TEXT NOT NULL,
size_bytes BIGINT NOT NULL,
storage_key TEXT NOT NULL,
extracted_text TEXT, -- full text for re-chunking
chunk_count INT NOT NULL DEFAULT 0,
status TEXT NOT NULL DEFAULT 'pending', -- pending, chunking, embedding, ready, error
error TEXT,
uploaded_by UUID NOT NULL REFERENCES users(id),
created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
updated_at TIMESTAMPTZ NOT NULL DEFAULT now()
);
CREATE INDEX IF NOT EXISTS idx_kbdoc_kb ON kb_documents(kb_id);
-- ── KB Chunks ────────────────────────────────
-- Chunked text + embedding vector for similarity search.
-- vector(3072) accommodates all current embedding models:
-- OpenAI ada-002 / text-embedding-3-small = 1536
-- OpenAI text-embedding-3-large = 3072
-- Open-source models = typically 768-1024
-- Smaller vectors are zero-padded at insert time.
CREATE TABLE IF NOT EXISTS kb_chunks (
id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
kb_id UUID NOT NULL REFERENCES knowledge_bases(id) ON DELETE CASCADE,
document_id UUID NOT NULL REFERENCES kb_documents(id) ON DELETE CASCADE,
chunk_index INT NOT NULL,
content TEXT NOT NULL,
token_count INT NOT NULL DEFAULT 0,
embedding VECTOR(3072),
metadata JSONB NOT NULL DEFAULT '{}',
created_at TIMESTAMPTZ NOT NULL DEFAULT now()
);
CREATE INDEX IF NOT EXISTS idx_kbchunk_kb ON kb_chunks(kb_id);
CREATE INDEX IF NOT EXISTS idx_kbchunk_doc ON kb_chunks(document_id);
-- NOTE: IVFFlat index for similarity search is created after first data
-- load (needs rows to train). The ingest handler creates it:
-- CREATE INDEX idx_kbchunk_embedding ON kb_chunks
-- USING ivfflat (embedding vector_cosine_ops) WITH (lists = 100);
-- ── Channel-KB Links ─────────────────────────
-- Which KBs are active for a given channel.
CREATE TABLE IF NOT EXISTS channel_knowledge_bases (
channel_id UUID NOT NULL REFERENCES channels(id) ON DELETE CASCADE,
kb_id UUID NOT NULL REFERENCES knowledge_bases(id) ON DELETE CASCADE,
enabled BOOLEAN NOT NULL DEFAULT true,
added_at TIMESTAMPTZ NOT NULL DEFAULT now(),
PRIMARY KEY (channel_id, kb_id)
);

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server/database/migrations/009_notes_embedding.sql
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-- 009_notes_embedding.sql
-- Adds vector embedding column to notes for semantic search.
-- Uses the same vector(3072) dimension as kb_chunks for uniformity.
ALTER TABLE notes ADD COLUMN IF NOT EXISTS embedding vector(3072);
-- NOTE: pgvector HNSW indexes are limited to 2000 dimensions.
-- For 3072-dim vectors, IVFFlat is the option but requires training
-- data (rows). The notes table is typically small enough that a
-- sequential scan is fast. If needed, create after data exists:
-- CREATE INDEX idx_notes_embedding ON notes
-- USING ivfflat (embedding vector_cosine_ops) WITH (lists = 100);