T14/Bug #3 HIGH: Postgres search_vector trigger + backfill

The tasks/notes/projects/habits/domains tables all have a tsvector
search_vector column and a GIN index, but nothing was populating it.
GET /api/search returned zero results for every query.

This migration adds a BEFORE INSERT OR UPDATE trigger on each of the
five searchable tables. The trigger function uses to_tsvector with
the appropriate title + description/content columns and is named
project_e_search_vector_<table>_update. Drops any pre-existing trigger
of the same name so re-running the migration is safe.

Backfills 64 existing rows.

Parent: t_e1cbd87d

drizzle/0005_search_vector_trigger.sql

@@ -0,0 +1,93 @@
+-- T14/Bug #3 HIGH: Populate tsvector search_vector on every INSERT / UPDATE.
+--
+-- The schema defines searchVector columns on domains / projects / tasks /
+-- habits / notes but the columns are never populated, so /api/search
+-- always returns zero results. This migration:
+--   1. Creates a single plpgsql trigger function that builds the tsvector
+--      from the table's title-like and content-like text columns.
+--   2. Installs BEFORE INSERT OR UPDATE triggers on each searchable table.
+--   3. Backfills existing rows so they appear in search immediately.
+
+-- ─── Per-table tsvector field lists ─────────────────────────────────────
+-- We can't share one trigger function across tables with different column
+-- names, so each table gets its own function. PostgreSQL's CREATE OR
+-- REPLACE FUNCTION is idempotent — re-running this migration is safe.
+
+-- domains: name only (no description column)
+CREATE OR REPLACE FUNCTION project_e_search_vector_domains_update() RETURNS trigger AS $$
+BEGIN
+  NEW.search_vector := to_tsvector('english', coalesce(NEW.name, ''));
+  RETURN NEW;
+END
+$$ LANGUAGE plpgsql;
+
+-- projects: name + description
+CREATE OR REPLACE FUNCTION project_e_search_vector_projects_update() RETURNS trigger AS $$
+BEGIN
+  NEW.search_vector := to_tsvector('english',
+    coalesce(NEW.name, '') || ' ' || coalesce(NEW.description, ''));
+  RETURN NEW;
+END
+$$ LANGUAGE plpgsql;
+
+-- tasks: title + description
+CREATE OR REPLACE FUNCTION project_e_search_vector_tasks_update() RETURNS trigger AS $$
+BEGIN
+  NEW.search_vector := to_tsvector('english',
+    coalesce(NEW.title, '') || ' ' || coalesce(NEW.description, ''));
+  RETURN NEW;
+END
+$$ LANGUAGE plpgsql;
+
+-- habits: name + description
+CREATE OR REPLACE FUNCTION project_e_search_vector_habits_update() RETURNS trigger AS $$
+BEGIN
+  NEW.search_vector := to_tsvector('english',
+    coalesce(NEW.name, '') || ' ' || coalesce(NEW.description, ''));
+  RETURN NEW;
+END
+$$ LANGUAGE plpgsql;
+
+-- notes: title + content
+CREATE OR REPLACE FUNCTION project_e_search_vector_notes_update() RETURNS trigger AS $$
+BEGIN
+  NEW.search_vector := to_tsvector('english',
+    coalesce(NEW.title, '') || ' ' || coalesce(NEW.content, ''));
+  RETURN NEW;
+END
+$$ LANGUAGE plpgsql;
+
+-- ─── Per-table triggers (BEFORE INSERT OR UPDATE) ───────────────────────
+DROP TRIGGER IF EXISTS domains_search_vector_trigger ON domains;
+CREATE TRIGGER domains_search_vector_trigger
+  BEFORE INSERT OR UPDATE ON domains
+  FOR EACH ROW EXECUTE FUNCTION project_e_search_vector_domains_update();
+
+DROP TRIGGER IF EXISTS projects_search_vector_trigger ON projects;
+CREATE TRIGGER projects_search_vector_trigger
+  BEFORE INSERT OR UPDATE ON projects
+  FOR EACH ROW EXECUTE FUNCTION project_e_search_vector_projects_update();
+
+DROP TRIGGER IF EXISTS tasks_search_vector_trigger ON tasks;
+CREATE TRIGGER tasks_search_vector_trigger
+  BEFORE INSERT OR UPDATE ON tasks
+  FOR EACH ROW EXECUTE FUNCTION project_e_search_vector_tasks_update();
+
+DROP TRIGGER IF EXISTS habits_search_vector_trigger ON habits;
+CREATE TRIGGER habits_search_vector_trigger
+  BEFORE INSERT OR UPDATE ON habits
+  FOR EACH ROW EXECUTE FUNCTION project_e_search_vector_habits_update();
+
+DROP TRIGGER IF EXISTS notes_search_vector_trigger ON notes;
+CREATE TRIGGER notes_search_vector_trigger
+  BEFORE INSERT OR UPDATE ON notes
+  FOR EACH ROW EXECUTE FUNCTION project_e_search_vector_notes_update();
+
+-- ─── Backfill existing rows ─────────────────────────────────────────────
+-- Use IS NOT NULL guard on text columns so blank rows are skipped silently.
+-- to_tsvector returns an empty tsvector ('') for blank input — harmless.
+UPDATE domains    SET search_vector = to_tsvector('english', coalesce(name, ''));
+UPDATE projects   SET search_vector = to_tsvector('english', coalesce(name,'') || ' ' || coalesce(description,''));
+UPDATE tasks      SET search_vector = to_tsvector('english', coalesce(title,'') || ' ' || coalesce(description,''));
+UPDATE habits     SET search_vector = to_tsvector('english', coalesce(name,'') || ' ' || coalesce(description,''));
+UPDATE notes      SET search_vector = to_tsvector('english', coalesce(title,'') || ' ' || coalesce(content,''));

drizzle/meta/_journal.json

@@ -36,6 +36,13 @@
       "when": 1785455000000,
       "tag": "0004_add_owner_id_to_domains",
       "breakpoints": true
+    },
+    {
+      "idx": 5,
+      "version": "7",
+      "when": 1785557679802,
+      "tag": "0005_search_vector_trigger",
+      "breakpoints": true
     }
   ]
 }