feat: add Firefox extract methods and complete data model fields (#527)

* feat: add Firefox extract methods and complete data model fields

Firefox extract methods:
- extractPasswords: JSON + ASN1PBE decryption via decryptPBE helper
- extractCookies: SQLite, plaintext (no encryption), journalOff
- extractHistories: SQLite, visit count ASC sort (matches old behavior)
- extractDownloads: SQLite, moz_annos JOIN with JSON content parsing
- extractBookmarks: SQLite, moz_bookmarks JOIN moz_places
- extractExtensions: JSON, filter by location=app-profile
- extractLocalStorage: SQLite webappsstore2, reversed originKey parsing

Complete data model fields (union of Chromium and Firefox):
- CookieEntry: add HasExpire, IsPersistent
- DownloadEntry: add MimeType
- CreditCardEntry: add NickName, Address
- ExtensionEntry: add HomepageURL, Enabled

Update Chromium extractors to populate new fields:
- extract_cookie.go: fill HasExpire, IsPersistent
- extract_download.go: SELECT and fill mime_type
- extract_creditcard.go: SELECT nickname, billing_address_id
- extract_extension.go: fill HomepageURL, Enabled (state==1)

Tests:
- Full test coverage for all 7 Firefox extract functions
- Password test uses known ASN1PBE test vectors from crypto package
- Table-driven tests for parseOriginKey
- Updated Chromium tests for new fields

* fix: add COALESCE for nullable bookmark title in Firefox query

Firefox moz_bookmarks.title can be NULL (PR #500 fixed this in old code).
Add COALESCE to handle NULL gracefully in SQL instead of relying on
driver-specific NULL→string conversion behavior.

* fix: enable journalOff for all Firefox SQLite extractors and populate cookie flags

- Set journalOff=true for extract_history, extract_download, extract_bookmark
  (Firefox databases require PRAGMA journal_mode=off to avoid lock errors)
- Populate HasExpire and IsPersistent for Firefox cookies (derived from expiry>0)
- Add test assertions for HasExpire/IsPersistent in both Chromium and Firefox

types/models.go

@@ -12,14 +12,16 @@ type LoginEntry struct {
 
 // CookieEntry represents a single browser cookie.
 type CookieEntry struct {
-	Host       string    `json:"host"        csv:"host"`
-	Path       string    `json:"path"        csv:"path"`
-	Name       string    `json:"name"        csv:"name"`
-	Value      string    `json:"value"       csv:"value"`
-	IsSecure   bool      `json:"is_secure"   csv:"is_secure"`
-	IsHTTPOnly bool      `json:"is_http_only" csv:"is_http_only"`
-	ExpireAt   time.Time `json:"expire_at"   csv:"expire_at"`
-	CreatedAt  time.Time `json:"created_at"  csv:"created_at"`
+	Host         string    `json:"host"          csv:"host"`
+	Path         string    `json:"path"          csv:"path"`
+	Name         string    `json:"name"          csv:"name"`
+	Value        string    `json:"value"         csv:"value"`
+	IsSecure     bool      `json:"is_secure"     csv:"is_secure"`
+	IsHTTPOnly   bool      `json:"is_http_only"  csv:"is_http_only"`
+	HasExpire    bool      `json:"has_expire"    csv:"has_expire"`
+	IsPersistent bool      `json:"is_persistent" csv:"is_persistent"`
+	ExpireAt     time.Time `json:"expire_at"     csv:"expire_at"`
+	CreatedAt    time.Time `json:"created_at"    csv:"created_at"`
 }
 
 // BookmarkEntry represents a single browser bookmark.
@@ -42,6 +44,7 @@ type HistoryEntry struct {
 type DownloadEntry struct {
 	URL        string    `json:"url"         csv:"url"`
 	TargetPath string    `json:"target_path" csv:"target_path"`
+	MimeType   string    `json:"mime_type"   csv:"mime_type"`
 	TotalBytes int64     `json:"total_bytes" csv:"total_bytes"`
 	StartTime  time.Time `json:"start_time"  csv:"start_time"`
 	EndTime    time.Time `json:"end_time"    csv:"end_time"`
@@ -53,6 +56,8 @@ type CreditCardEntry struct {
 	Number   string `json:"number"    csv:"number"`
 	ExpMonth string `json:"exp_month" csv:"exp_month"`
 	ExpYear  string `json:"exp_year"  csv:"exp_year"`
+	NickName string `json:"nick_name" csv:"nick_name"`
+	Address  string `json:"address"   csv:"address"`
 }
 
 // StorageEntry represents a single key-value pair from local or session storage.
@@ -64,8 +69,10 @@ type StorageEntry struct {
 
 // ExtensionEntry represents a single browser extension.
 type ExtensionEntry struct {
-	Name        string `json:"name"        csv:"name"`
-	ID          string `json:"id"          csv:"id"`
-	Description string `json:"description" csv:"description"`
-	Version     string `json:"version"     csv:"version"`
+	Name        string `json:"name"         csv:"name"`
+	ID          string `json:"id"           csv:"id"`
+	Description string `json:"description"  csv:"description"`
+	Version     string `json:"version"      csv:"version"`
+	HomepageURL string `json:"homepage_url" csv:"homepage_url"`
+	Enabled     bool   `json:"enabled"      csv:"enabled"`
 }