fix: address code review findings

- Strip standalone reissue keywords (remaster/remastered/remix/deluxe/
  expanded/edition/reissue/anniversary/bonus) regardless of brackets so
  non-parenthesized remasters still match the plain local title above the
  0.85 threshold (was falsely reported missing).
- Fix TestAppRun_ScanLogsMissingReleases to verify run() performs the
  scan itself (capture its log output) instead of re-running ScanAll
  independently, which passed even if run() were a no-op.
- Fix TestSimilarity misleading cases that downgraded to a <0.85 range
  check with dead want/epsilon fields; assert actual computed scores.

cmd/naviwatcher/main_test.go

@@ -1,15 +1,17 @@
 package main
 
 import (
+	"bytes"
 	"context"
+	"log"
 	"os"
 	"path/filepath"
+	"strings"
 	"testing"
 	"time"
 
 	"naviwatcher/internal/config"
 	"naviwatcher/internal/database"
-	"naviwatcher/internal/scanner"
 )
 
 func TestAppRun_ScanLogsMissingReleases(t *testing.T) {
@@ -54,6 +56,13 @@ func TestAppRun_ScanLogsMissingReleases(t *testing.T) {
 	ctx, cancel := context.WithCancel(context.Background())
 	defer cancel()
 
+	// Capture run()'s log output so we assert that run() ITSELF performed
+	// the scan (not a separately re-run ScanAll). This guards against the
+	// hook silently becoming a no-op while still passing.
+	var buf bytes.Buffer
+	log.SetOutput(&buf)
+	defer log.SetOutput(os.Stderr)
+
 	// Run the (blocking) hook in a goroutine; cancel after it has had time to
 	// perform the scan so run() returns nil via the ctx.Done() path.
 	done := make(chan error, 1)
@@ -66,15 +75,10 @@ func TestAppRun_ScanLogsMissingReleases(t *testing.T) {
 		t.Fatalf("app.run() returned error: %v", err)
 	}
 
-	// The scan should have found the missing release (Animals) for artist-1.
-	// Use a fresh context for the verification scan since the run context was
-	// cancelled above.
-	missing, err := scanner.ScanAll(context.Background(), db, 0.85)
-	if err != nil {
-		t.Fatalf("ScanAll() error: %v", err)
-	}
-	if len(missing) != 1 || missing[0].RGID != "rg2" {
-		t.Fatalf("expected 1 missing release (rg2/Animals), got %+v", missing)
+	// run() must have logged the missing release (Animals) for artist-1.
+	out := buf.String()
+	if !strings.Contains(out, "missing: artist=artist-1") || !strings.Contains(out, "Animals") {
+		t.Fatalf("app.run() did not log the expected missing release; log output:\n%s", out)
 	}
 }