feat(bugtracker, tokens): Add project search, push_id, target_agent, tags, edit modal, extended severities (idea, wishlist), token actions (copy/toggle/delete), and agent integration guide

sql/schema.sql

@@ -213,9 +213,12 @@ CREATE TABLE IF NOT EXISTS bugtracker_items (
   error_hash VARCHAR(64) NULL,
   build_version VARCHAR(64) NULL,
   environment ENUM('production', 'development', 'staging', 'testing') NOT NULL DEFAULT 'production',
-  severity ENUM('low', 'medium', 'high', 'critical') NOT NULL DEFAULT 'medium',
+  severity ENUM('idea', 'wishlist', 'low', 'medium', 'high', 'critical') NOT NULL DEFAULT 'medium',
   status ENUM('open', 'planned', 'in_progress', 'resolved', 'closed', 'rejected') NOT NULL DEFAULT 'open',
   occurrence_count INT NOT NULL DEFAULT 1,
+  push_id VARCHAR(128) NULL,
+  target_agent VARCHAR(100) NULL,
+  tags VARCHAR(255) NULL,
   first_seen_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
   last_seen_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
   resolved_at DATETIME NULL,
@@ -225,7 +228,8 @@ CREATE TABLE IF NOT EXISTS bugtracker_items (
   created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
   updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
   KEY ix_bt_proj_env (project_slug, environment, type, status),
-  KEY ix_bt_hash (error_hash)
+  KEY ix_bt_hash (error_hash),
+  KEY ix_bt_push_id (push_id)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
 
 CREATE TABLE IF NOT EXISTS bugtracker_comments (