feat(daemon): wire RecoveryStore into AppState with AUTHFORGE_RECOVERY_DIR override

StorageConfig gains a recovery_dir field; from_env_or_defaults reads
AUTHFORGE_RECOVERY_DIR (default /var/lib/authforge/recovery). AppState
exposes issue/list/revoke methods that Task 6 wires through D-Bus. Test
fixtures in state.rs and dbus.rs updated.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

daemon/src/state.rs

@@ -4,6 +4,7 @@ use crate::policy_apply::{ApplyError, PolicyApplier};
 use crate::storage::credentials::{CredEntry, CredentialsStore, CredsError, CredsPathResolver};
 use crate::storage::pending::{PendingError, PendingStore};
 use crate::storage::policy::PolicyStore;
+use crate::storage::recovery::{RecoveryEntry, RecoveryStore, RecoveryStoreError};
 use crate::storage::userdb::{UserDb, UserDbError};
 use authforge_common::policy::{Policy, PolicyError};
 use authforge_common::types::{Credential, Method, PendingFlag, PolicyApplyResult, Transport};
@@ -20,6 +21,8 @@ pub enum StateError {
     #[error(transparent)]
     Pending(#[from] PendingError),
     #[error(transparent)]
+    Recovery(#[from] RecoveryStoreError),
+    #[error(transparent)]
     Creds(#[from] CredsError),
     #[error(transparent)]
     UserDb(#[from] UserDbError),
@@ -32,6 +35,7 @@ pub enum StateError {
 pub struct StorageConfig {
     pub policy_dir: PathBuf,
     pub pending_dir: PathBuf,
+    pub recovery_dir: PathBuf,
     pub userdb_path: PathBuf,
     /// Where pam-auth-update reads the AuthForge profile from. Defaults to
     /// `/usr/share/pam-configs/authforge`; tests / non-root runs override.
@@ -51,6 +55,7 @@ impl StorageConfig {
         Self {
             policy_dir: env("AUTHFORGE_POLICY_DIR", "/etc/authforge/policy.d"),
             pending_dir: env("AUTHFORGE_PENDING_DIR", "/var/lib/authforge/pending"),
+            recovery_dir: env("AUTHFORGE_RECOVERY_DIR", "/var/lib/authforge/recovery"),
             userdb_path: env("AUTHFORGE_USERDB", "/var/lib/authforge/users.db"),
             pam_profile_path: env("AUTHFORGE_PAMCONF_PATH", "/usr/share/pam-configs/authforge"),
             pam_auth_update: env("AUTHFORGE_PAM_AUTH_UPDATE", "/usr/sbin/pam-auth-update"),
@@ -61,6 +66,8 @@ impl StorageConfig {
 pub struct AppState {
     policy: PolicyStore,
     pending: PendingStore,
+    #[allow(dead_code)] // wired through D-Bus in Task 6.
+    recovery: RecoveryStore,
     userdb: Mutex<UserDb>,
     authn: Arc<dyn Authenticator>,
     applier: PolicyApplier,
@@ -70,11 +77,13 @@ impl AppState {
     pub fn open(cfg: StorageConfig, authn: Arc<dyn Authenticator>) -> Result<Self, StateError> {
         let policy = PolicyStore::new(cfg.policy_dir);
         let pending = PendingStore::new(cfg.pending_dir);
+        let recovery = RecoveryStore::new(cfg.recovery_dir);
         let userdb = Mutex::new(UserDb::open(&cfg.userdb_path)?);
         let applier = PolicyApplier::new(cfg.pam_profile_path, cfg.pam_auth_update);
         Ok(Self {
             policy,
             pending,
+            recovery,
             userdb,
             authn,
             applier,
@@ -222,6 +231,21 @@ impl AppState {
         Ok(self.pending.clear(user)?)
     }
 
+    #[allow(dead_code)] // wired through D-Bus in Task 6.
+    pub async fn issue_recovery(&self, user: &str) -> Result<String, StateError> {
+        Ok(self.recovery.issue(user, crate::recovery::DEFAULT_TTL_SECS)?)
+    }
+
+    #[allow(dead_code)] // wired through D-Bus in Task 6.
+    pub async fn list_recovery(&self) -> Result<Vec<RecoveryEntry>, StateError> {
+        Ok(self.recovery.list()?)
+    }
+
+    #[allow(dead_code)] // wired through D-Bus in Task 6.
+    pub async fn revoke_recovery(&self, user: &str) -> Result<bool, StateError> {
+        Ok(self.recovery.revoke(user)?)
+    }
+
     /// Tests assert pending flag round-trips through SetPendingFlag /
     /// ClearPendingFlag via this read accessor. Production readers (PAM
     /// module, GUI status) read the on-disk file directly in later phases.
@@ -250,6 +274,7 @@ mod tests {
             StorageConfig {
                 policy_dir: d.join("policy.d"),
                 pending_dir: d.join("pending"),
+                recovery_dir: d.join("recovery"),
                 userdb_path: d.join("users.db"),
                 pam_profile_path: d.join("authforge-pamconf"),
                 pam_auth_update: shim,
@@ -309,6 +334,7 @@ mod tests {
             StorageConfig {
                 policy_dir,
                 pending_dir: d.path().join("pending"),
+                recovery_dir: d.path().join("recovery"),
                 userdb_path: d.path().join("users.db"),
                 pam_profile_path: d.path().join("authforge-pamconf"),
                 pam_auth_update: shim,