fix(tests): resolve pyright strict errors in forge test helpers

CI runs `pyright .` over the whole repo including tests; the earlier
run only checked the source paths. The test helpers used `**over`
dict-splat into typed constructors, which pyright strict rejects.

- forge_state: build a typed ForgeState base and dataclasses.replace(**over)
- provenance: explicit typed keyword params instead of a **over dict
- resume: _launch_kwargs returns dict[str, Any] (copy call_args.kwargs)
- forge_base: assert PermissionError in __mro__ (avoids always-true issubclass)
- client: annotate _resp body param; type: ignore the mock __enter__ lambda

pyright . now 0 errors; 47 tests still pass; pylint 9.97/10.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WL77TgFxKbs3cidGMG9dz7

tests/unit/test_contrib_gitea_forge_state.py

@@ -4,6 +4,7 @@ from __future__ import annotations
 
 import tempfile
 import unittest
+from dataclasses import replace
 from pathlib import Path
 from unittest.mock import patch
 
@@ -15,22 +16,21 @@ from bot_bottle.contrib.gitea.forge_state import (
 )
 
 
-def _state(**over) -> ForgeState:
-    base = {
-        "owner": "didericis",
-        "repo": "bot-bottle",
-        "issue_number": 17,
-        "slug": "implementer-abc12",
-        "agent_name": "implementer",
-        "bottle_names": ["claude"],
-        "backend_name": "docker",
-        "agent_git_user": "didericis-claude",
-        "pr_number": 42,
-        "status": STATUS_FROZEN,
-        "last_checkin_at": "2026-06-29T12:04:12-04:00",
-    }
-    base.update(over)
-    return ForgeState(**base)
+def _state(**over: object) -> ForgeState:
+    base = ForgeState(
+        owner="didericis",
+        repo="bot-bottle",
+        issue_number=17,
+        slug="implementer-abc12",
+        agent_name="implementer",
+        bottle_names=["claude"],
+        backend_name="docker",
+        agent_git_user="didericis-claude",
+        pr_number=42,
+        status=STATUS_FROZEN,
+        last_checkin_at="2026-06-29T12:04:12-04:00",
+    )
+    return replace(base, **over)
 
 
 class ForgeStateTest(unittest.TestCase):