fix: code quality improvements across lsp, askcli, appconfig, integrationtests

- lsp/handlers_completion.go: track collectFirstCompletion goroutine in
  inflight WaitGroup (goroutine leak fix)
- lsp/transport.go: use %w instead of %v for error wrapping
- askcli/command_list.go: extract handleListWithFilters shared helper;
  handleList/handleAll/handleReady are now single-liners
- askcli/command_list.go, urgency.go, dep.go: log ParseTaskExport errors
  to stderr instead of returning 1 silently
- appconfig/config_load.go: rename 'any' variable to 'found' to avoid
  shadowing the built-in identifier
- llm/provider.go: add explanatory comment for package-level registry
- integrationtests/ask_test.go: add //go:build integration tag; move
  repoRoot init from init() to TestMain with diagnostic error message

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

1 files changed, 5 insertions, 4 deletions

diff --git a/integrationtests/ask_test.go b/integrationtests/ask_test.go
index a762b9d..b0f574f 100644
--- a/integrationtests/ask_test.go
+++ b/integrationtests/ask_test.go
@@ -1,3 +1,5 @@
+//go:build integration
+
 package integrationtests
 
 import (
@@ -17,6 +19,7 @@ import (
 	"codeberg.org/snonux/hexai/internal/askcli"
 )
 
+// repoRoot is set in TestMain before any test runs.
 var repoRoot string
 
 func findRepoRoot() string {
@@ -40,10 +43,6 @@ func findRepoRoot() string {
 	return ""
 }
 
-func init() {
-	repoRoot = findRepoRoot()
-}
-
 func askBinaryPath() string {
 	return filepath.Join(repoRoot, "cmd", "ask", "ask")
 }
@@ -216,7 +215,9 @@ func getTaskInfoRaw(ctx context.Context, uuid string) (string, bool) {
 }
 
 func TestMain(m *testing.M) {
+	repoRoot = findRepoRoot()
 	if repoRoot == "" {
+		fmt.Fprintln(os.Stderr, "integration tests: cannot find repo root (go.mod or .git)")
 		os.Exit(1)
 	}
 	// Always rebuild the binary so tests reflect the current source.