feat(deps): update beads to 0.49.1 with dolt server mode, claude-code to 2.1.30

beads:
- Pin to commit 93965b4a (last before Go 1.25.6 requirement)
- Build locally with corrected vendorHash (upstream default.nix is stale)
- Enables dolt server mode support (gt-1mf.3)

claude-code: 2.1.19 → 2.1.30

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

flake.lock

@@ -8,17 +8,17 @@
         ]
       },
       "locked": {
-        "lastModified": 1768533782,
-        "narHash": "sha256-+5wZHjGfe2bf+FUDc99avz+ASc8Qx34QVkd85s0VU/U=",
+        "lastModified": 1769840331,
+        "narHash": "sha256-Yp0K4JoXX8EcHp1juH4OZ7dcCmkopDu4VvAgZEOxgL8=",
         "owner": "steveyegge",
         "repo": "beads",
-        "rev": "55e733cf624a94c63257a657970f1fc9a287883d",
+        "rev": "93965b4abeed920a4701e03571d1b6bb75810722",
         "type": "github"
       },
       "original": {
         "owner": "steveyegge",
-        "ref": "55e733c",
         "repo": "beads",
+        "rev": "93965b4abeed920a4701e03571d1b6bb75810722",
         "type": "github"
       }
     },