Refactor patch test system and add booking edit requests

- Replace patch_test_duration_hours on services with separate
  patch_tests table
- Add user_patch_tests table to track user patch test records
- Add booking edit request system: users can request time changes
- Add admin handlers to list, approve, and reject edit requests
- Add validation to prevent editing completed/cancelled bookings
- Add overlap and closed-day checks for booking edits

init-scripts/init-script.sql

@@ -150,6 +150,38 @@ CREATE INDEX idx_verification_codes_code ON verification_codes (code);
 CREATE INDEX idx_verification_codes_user_purpose ON verification_codes (user_id, purpose) WHERE used_at IS NULL;
 CREATE INDEX idx_verification_codes_expires ON verification_codes (expires_at) WHERE used_at IS NULL;
 
+-- =======================================
+-- PATCH TESTS TABLE
+-- =======================================
+
+CREATE TABLE patch_tests (
+    id CHAR(12) PRIMARY KEY DEFAULT generate_service_id(),
+    name VARCHAR(100) NOT NULL,
+    description TEXT,
+    notice_duration_hours INT NOT NULL DEFAULT 24,
+    expiry_months INT NOT NULL DEFAULT 6,
+    service_ids CHAR(12)[] DEFAULT '{}',
+    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+CREATE INDEX idx_patch_tests_name ON patch_tests(name);
+
+-- =======================================
+-- USER PATCH TESTS TABLE
+-- =======================================
+
+CREATE TABLE user_patch_tests (
+    id BIGSERIAL PRIMARY KEY,
+    user_id CHAR(12) NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    patch_test_id CHAR(12) NOT NULL REFERENCES patch_tests(id) ON DELETE CASCADE,
+    tested_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    notes TEXT,
+    UNIQUE (user_id, patch_test_id)
+);
+
+CREATE INDEX idx_user_patch_tests_user ON user_patch_tests(user_id);
+CREATE INDEX idx_user_patch_tests_tested_at ON user_patch_tests(tested_at);
+
 -- =======================================
 -- SERVICES TABLE
 -- =======================================
@@ -161,7 +193,6 @@ CREATE TABLE services (
     price NUMERIC(10,2) NOT NULL,
     duration_minutes INT NOT NULL,
     is_active BOOLEAN NOT NULL DEFAULT TRUE,
-    patch_test_duration_hours INT NOT NULL DEFAULT 0,
     minimum_age_required INT NOT NULL DEFAULT 16,
     requires_manual_pricing BOOLEAN NOT NULL DEFAULT FALSE,
     requires_manual_duration BOOLEAN NOT NULL DEFAULT FALSE,
@@ -171,16 +202,6 @@ CREATE TABLE services (
 
 CREATE INDEX idx_services_name ON services(name);
 
-CREATE TABLE user_service_patch_tests (
-    id BIGSERIAL PRIMARY KEY,
-    user_id CHAR(12) NOT NULL REFERENCES users(id) ON DELETE CASCADE,
-    service_id CHAR(12) NOT NULL REFERENCES services(id) ON DELETE CASCADE,
-    last_time TIMESTAMPTZ NOT NULL,
-    UNIQUE (user_id, service_id)
-);
-
-CREATE INDEX idx_service_patch_tests_userid ON user_service_patch_tests(user_id);
-
 -- =======================================
 -- BOOKINGS TABLE
 -- =======================================