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: 000040_wiki_log_entries
+-- Description: Dedicated append-only event table for wiki operation log entries.
+--              Replaces the "single giant TEXT column on slug='log' wiki_pages
+--              row" model that caused O(n^2) write amplification as KBs grew:
+--              every ingest/retract op previously did GetLog + UpdatePage
+--              rewriting the entire (potentially multi-MB) TEXT column.
+--              Here each event is one INSERT; reads paginate by (kb_id, id DESC).
+
+DO $$ BEGIN RAISE NOTICE '[Migration 000040] Applying wiki_log_entries schema'; END $$;
+
+CREATE TABLE IF NOT EXISTS wiki_log_entries (
+    id                BIGSERIAL PRIMARY KEY,
+    tenant_id         BIGINT NOT NULL,
+    knowledge_base_id VARCHAR(36) NOT NULL,
+    action            VARCHAR(32) NOT NULL,
+    knowledge_id      VARCHAR(36) NOT NULL DEFAULT '',
+    doc_title         TEXT NOT NULL DEFAULT '',
+    summary           TEXT NOT NULL DEFAULT '',
+    pages_affected    JSONB NOT NULL DEFAULT '[]'::JSONB,
+    created_at        TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW()
+);
+
+-- Primary list query: cursor-paginated feed per KB, newest first.
+-- Using id (BIGSERIAL, monotonic) as the cursor sidesteps duplicate-timestamp
+-- tie-breaking that a created_at cursor would require.
+CREATE INDEX IF NOT EXISTS idx_wiki_log_entries_kb_id_desc
+    ON wiki_log_entries (knowledge_base_id, id DESC);
+
+CREATE INDEX IF NOT EXISTS idx_wiki_log_entries_tenant_id
+    ON wiki_log_entries (tenant_id);
+
+DO $$ BEGIN RAISE NOTICE '[Migration 000040] wiki_log_entries schema applied successfully'; END $$;