Fix teams_name_unique: replace expression index with plain constraint (#33)

Migration 1709836800001 created an expression index on lower(trim(name))
which cannot be used as a Hasura on_conflict constraint target. This broke
team auto-provisioning (dataSourceHelpers.js) because the insert mutation
uses on_conflict: { constraint: teams_name_unique }. Application code
already normalizes names to lowercase/trimmed before insert, so a plain
unique constraint is sufficient and Hasura-compatible.

Also increases hasura_cli migrations server timeout from 30s to 120s to
prevent restart loops when applying large migration sets on cold start.

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: acmeguy

docker-compose.dev.yml

@@ -103,6 +103,7 @@ services:
     environment:
       ENABLE_TELEMETRY: "false"
       CONSOLE_MODE: cli
+      HASURA_GRAPHQL_MIGRATIONS_SERVER_TIMEOUT: "120"
     volumes:
       - ./services/hasura/migrations:/hasura/migrations
       - ./services/hasura/metadata:/hasura/metadata

services/hasura/migrations/1741520400001_fix_teams_name_unique_constraint/down.sql

@@ -0,0 +1,3 @@
+-- Revert to expression index (note: this will re-break Hasura on_conflict)
+ALTER TABLE public.teams DROP CONSTRAINT IF EXISTS teams_name_unique;
+CREATE UNIQUE INDEX teams_name_unique ON public.teams (lower(trim(name)));

services/hasura/migrations/1741520400001_fix_teams_name_unique_constraint/up.sql

@@ -0,0 +1,15 @@
+-- Fix: expression index cannot be used as Hasura on_conflict constraint target.
+-- The expression index created by 1709836800001 breaks:
+--   on_conflict: { constraint: teams_name_unique, update_columns: [] }
+-- in the team auto-provisioning mutation (dataSourceHelpers.js).
+--
+-- Application code (deriveTeamName, findTeamByName) already normalizes
+-- names to lower(trim(name)) before insert/lookup, so a plain constraint
+-- is sufficient and Hasura-compatible.
+
+-- Normalize any names that slipped through without lowering/trimming
+UPDATE public.teams SET name = lower(trim(name)) WHERE name != lower(trim(name));
+
+-- Drop the expression index and replace with a plain unique constraint
+DROP INDEX IF EXISTS public.teams_name_unique;
+ALTER TABLE public.teams ADD CONSTRAINT teams_name_unique UNIQUE (name);