Add QR pairing (terminal QR, in-app scanner, iris://pair deep link)

gateway-plugin/outbox.py

@@ -10,7 +10,7 @@ Retention prunes rows older than ``outbox_retention_hours`` (default 72h). A
 device offline longer than the window misses those frames; it recovers full
 context via ``history`` (M5 wires push so the device is woken to sync).
 
-Storage: ``get_hermes_home()/"android"/outbox.db``.
+Storage: ``get_hermes_home()/"iris"/outbox.db``.
 
 Milestone M3 (built), extended in M5 (push integration).
 """
@@ -36,7 +36,7 @@ DEFAULT_MAX_ROWS = 5000
 
 
 class Outbox:
-    """Persistent outbox under ``get_hermes_home()/"android"``.
+    """Persistent outbox under ``get_hermes_home()/"iris"``.
 
     Thread-safe (single connection + lock); operations are small and fast
     enough to run inline on the gateway's asyncio loop (mirrors
@@ -126,7 +126,7 @@ class Outbox:
             (excess,),
         )
         self._overflow_pruned += excess
-        logger.info("android outbox: row cap pruned %s oldest row(s)", excess)
+        logger.info("iris outbox: row cap pruned %s oldest row(s)", excess)
 
     def latest_cursor(self) -> int:
         """The high-water cursor (0 when nothing has been appended)."""
@@ -419,7 +419,7 @@ class Outbox:
                 self._conn.execute("DELETE FROM outbox WHERE created < ?", (cutoff,))
                 self._conn.commit()
             except sqlite3.Error as e:
-                logger.debug("android outbox: prune failed: %s", e)
+                logger.debug("iris outbox: prune failed: %s", e)
 
     def prune(self) -> None:
         """Force a retention prune (ignores the interval throttle)."""