WeKnora deployment source with the reviewed wiki identity, summary and recovery fixes

2026-09-22 16:19:06 +08:00
commit f7fc992f57
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+-- Migration: 000028_im_thread_session
+-- Description: Add thread-based session mode support for IM channels
+DO $$ BEGIN RAISE NOTICE '[Migration 000028] Adding thread session support'; END $$;
+
+-- 1. im_channels: add session_mode column
+ALTER TABLE im_channels
+    ADD COLUMN IF NOT EXISTS session_mode VARCHAR(20) NOT NULL DEFAULT 'user';
+
+-- 2. CHECK constraint (separate statement: ADD COLUMN IF NOT EXISTS does not support inline CONSTRAINT)
+DO $$ BEGIN
+    ALTER TABLE im_channels
+        ADD CONSTRAINT chk_im_channels_session_mode
+        CHECK (session_mode IN ('user', 'thread'));
+EXCEPTION WHEN duplicate_object THEN NULL;
+END $$;
+
+COMMENT ON COLUMN im_channels.session_mode IS
+    'Session resolution mode: user (per user+chat, default) or thread (per thread)';
+
+-- 3. im_channel_sessions: add thread_id column
+ALTER TABLE im_channel_sessions
+    ADD COLUMN IF NOT EXISTS thread_id VARCHAR(128) NOT NULL DEFAULT '';
+
+COMMENT ON COLUMN im_channel_sessions.thread_id IS
+    'Platform thread identifier for thread-based sessions. Empty for user-mode sessions.';
+
+-- 4. Unique index for thread-mode session lookup
+--    Includes chat_id because Telegram message_thread_id is per-chat (topic ID within a group).
+CREATE UNIQUE INDEX IF NOT EXISTS idx_channel_thread_lookup
+    ON im_channel_sessions (platform, chat_id, thread_id, tenant_id)
+    WHERE deleted_at IS NULL AND thread_id != '';
+
+DO $$ BEGIN RAISE NOTICE '[Migration 000028] Thread session support added'; END $$;