Dashboard account section, profile API, and CSS account panels

- SSO session auth gating on all protected pages
- dashboard.php: account section (profile form + workspace panel),
  onboarding prompt modal, overview bar extracted to CSS classes,
  dashboard.css linked in page head
- api/profile.php: save/dismiss endpoint for optional profile fields
- assets/css/dashboard.css: account grid, dash-account-panel,
  dash-profile-form, profile-prompt-backdrop modal, overview bar
  classes, dash-section-kicker, dash-tier-badge base styles
- includes/bootstrap.php: dbnToolsMainUserProfile,
  dbnToolsProfileNeedsPrompt, dbnToolsRequirePageAuth
- scripts/sql/004_user_profile_fields.sql: nullable phone, address,
  and profile_prompt_dismissed_at columns

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

scripts/sql/004_user_profile_fields.sql

@@ -0,0 +1,63 @@
+-- Migration 004: optional DBN Tools profile fields
+-- Run against dobetternorge_maindb:
+--   mysql -u root dobetternorge_maindb < scripts/sql/004_user_profile_fields.sql
+
+START TRANSACTION;
+
+SET @db_name := DATABASE();
+
+SET @sql := (
+  SELECT IF(COUNT(*) = 0,
+    'ALTER TABLE users ADD COLUMN phone VARCHAR(40) NULL AFTER email',
+    'SELECT 1')
+  FROM INFORMATION_SCHEMA.COLUMNS
+  WHERE TABLE_SCHEMA = @db_name AND TABLE_NAME = 'users' AND COLUMN_NAME = 'phone'
+);
+PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;
+
+SET @sql := (
+  SELECT IF(COUNT(*) = 0,
+    'ALTER TABLE users ADD COLUMN address_line1 VARCHAR(180) NULL AFTER phone',
+    'SELECT 1')
+  FROM INFORMATION_SCHEMA.COLUMNS
+  WHERE TABLE_SCHEMA = @db_name AND TABLE_NAME = 'users' AND COLUMN_NAME = 'address_line1'
+);
+PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;
+
+SET @sql := (
+  SELECT IF(COUNT(*) = 0,
+    'ALTER TABLE users ADD COLUMN address_line2 VARCHAR(180) NULL AFTER address_line1',
+    'SELECT 1')
+  FROM INFORMATION_SCHEMA.COLUMNS
+  WHERE TABLE_SCHEMA = @db_name AND TABLE_NAME = 'users' AND COLUMN_NAME = 'address_line2'
+);
+PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;
+
+SET @sql := (
+  SELECT IF(COUNT(*) = 0,
+    'ALTER TABLE users ADD COLUMN postal_code VARCHAR(32) NULL AFTER address_line2',
+    'SELECT 1')
+  FROM INFORMATION_SCHEMA.COLUMNS
+  WHERE TABLE_SCHEMA = @db_name AND TABLE_NAME = 'users' AND COLUMN_NAME = 'postal_code'
+);
+PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;
+
+SET @sql := (
+  SELECT IF(COUNT(*) = 0,
+    'ALTER TABLE users ADD COLUMN address_region VARCHAR(100) NULL AFTER city',
+    'SELECT 1')
+  FROM INFORMATION_SCHEMA.COLUMNS
+  WHERE TABLE_SCHEMA = @db_name AND TABLE_NAME = 'users' AND COLUMN_NAME = 'address_region'
+);
+PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;
+
+SET @sql := (
+  SELECT IF(COUNT(*) = 0,
+    'ALTER TABLE users ADD COLUMN profile_prompt_dismissed_at DATETIME NULL AFTER preferred_language',
+    'SELECT 1')
+  FROM INFORMATION_SCHEMA.COLUMNS
+  WHERE TABLE_SCHEMA = @db_name AND TABLE_NAME = 'users' AND COLUMN_NAME = 'profile_prompt_dismissed_at'
+);
+PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;
+
+COMMIT;