fix(lint): resolve golangci-lint errors for clean CI

Fixes 5 linting issues to allow PR checks to pass:
1. hooks.go: Explicitly ignore error in async goroutine
2. 022_drop_edge_columns.go: Handle deferred PRAGMA error
3. flags.go: Add nosec comment for validated file path
4. create_form.go: Fix American spelling (canceled vs cancelled)
5. create_form.go: Explicitly mark cmd parameter as required by cobra
These are pre-existing issues in the codebase, fixed here to
enable clean CI for the import deduplication fix.
🤖 Generated with Claude Code

internal/hooks/hooks.go

@@ -67,8 +67,10 @@ func (r *Runner) Run(event string, issue *types.Issue) {
 		return // Not executable, skip
 	}
 
-	// Run asynchronously
-	go r.runHook(hookPath, event, issue)
+	// Run asynchronously (ignore error as this is fire-and-forget)
+	go func() {
+		_ = r.runHook(hookPath, event, issue)
+	}()
 }
 
 // RunSync executes a hook synchronously and returns any error.