chore: update beads 0.49.6→0.52.0 and gastown, make gastown a proper flake

- beads: update to 0.52.0 (16af00d7), refresh vendorHash
- gastown: update to 35157d02, remove flake=false now that upstream has flake.nix
- gastown: add inputs.nixpkgs.follows and inputs.beads.follows to deduplicate deps
- Clean up stale comments

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

flake.lock

@@ -8,11 +8,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1770711800,
-        "narHash": "sha256-A7S9C5NBhrmf60wxEZiWTOn07eUPEk1d75LixLDedc0=",
+        "lastModified": 1771401137,
+        "narHash": "sha256-RarPa2n2mTd3LhXM+cJbP9tXEUdDksqkNXVWPAQF0xw=",
         "owner": "steveyegge",
         "repo": "beads",
-        "rev": "6a51223b6fb59f97e699d5ac2f9a93967ca66f28",
+        "rev": "16af00d7576f8b4fd7bb59f54b344c8fbc6d7af4",
         "type": "github"
       },
       "original": {
@@ -78,14 +78,40 @@
         "type": "github"
       }
     },
-    "gastown": {
-      "flake": false,
+    "flake-utils_2": {
+      "inputs": {
+        "systems": "systems_2"
+      },
       "locked": {
-        "lastModified": 1770789619,
-        "narHash": "sha256-BDtohweSxBBLM+bAouzsK6tvAo5bZPUviK/ITMIyUag=",
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "gastown": {
+      "inputs": {
+        "beads": [
+          "beads"
+        ],
+        "flake-utils": "flake-utils_2",
+        "nixpkgs": [
+          "nixpkgs-unstable"
+        ]
+      },
+      "locked": {
+        "lastModified": 1771433550,
+        "narHash": "sha256-eRL6ry5xJDzKppYvKEBy0YAjhq9vuFG4fPcn/qWAk4w=",
         "owner": "steveyegge",
         "repo": "gastown",
-        "rev": "2779e30fd35c3482912b22e4be89258fe5510167",
+        "rev": "35157d025a7fa50622c8de619714690de6623b00",
         "type": "github"
       },
       "original": {
@@ -203,7 +229,7 @@
         "doomemacs": "doomemacs",
         "emacs-overlay": "emacs-overlay",
         "nixpkgs": [],
-        "systems": "systems_2"
+        "systems": "systems_3"
       },
       "locked": {
         "lastModified": 1770887282,
@@ -398,6 +424,21 @@
         "repo": "default",
         "type": "github"
       }
+    },
+    "systems_3": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
     }
   },
   "root": "root",