Address Copilot review nits on PR #461

Per the GH Copilot review, clean a few metadata/comment
inconsistencies that would otherwise live on `main`,

- drop the `3.12` Trove classifier since `requires-python`
  is now `>=3.13`.
- remove the `ci.yml` comment referencing the not-yet-landed
  `--spawn-method=main_thread_forkserver` (misleading on
  `main`, and leaks the MTF name early).
- fix the `//tmp` double-slash typo in the local `Read()`
  permission pattern.

Review: PR #461 (copilot-pull-request-reviewer)
https://github.com/goodboy/tractor/pull/461#pullrequestreview-4510034938

(this patch was generated in some part by [`claude-code`][claude-code-gh])
[claude-code-gh]: https://github.com/anthropics/claude-code

.claude/settings.local.json

@@ -32,7 +32,7 @@
       "Bash(UV_PROJECT_ENVIRONMENT=py* uv run:*)",
       "Bash(echo EXIT:$?:*)",
       "Bash(echo \"EXIT=$?\")",
-      "Read(//tmp/**)"
+      "Read(/tmp/**)"
     ],
     "deny": [],
     "ask": []

.github/workflows/ci.yml

@@ -154,7 +154,6 @@ jobs:
           --spawn-backend=${{ matrix.spawn_backend }}
           --tpt-proto=${{ matrix.tpt_proto }}
           --capture=fd
-        # ^XXX^ can't work with --spawn-method=main_thread_forkserver
 
   # XXX legacy NOTE XXX
   #

pyproject.toml

@@ -29,7 +29,6 @@ classifiers = [
   "License :: OSI Approved :: GNU Affero General Public License v3 or later (AGPLv3+)",
   "Programming Language :: Python :: Implementation :: CPython",
   "Programming Language :: Python :: 3 :: Only",
-  "Programming Language :: Python :: 3.12",
   "Programming Language :: Python :: 3.13",
   "Programming Language :: Python :: 3.14",
   "Topic :: System :: Distributed Computing",