Unify Kimi/Codex skill naming and migrate legacy dotted Kimi dirs (#1971)

* fix: unify hyphenated skills and migrate legacy kimi dotted dirs

* fix: preserve legacy kimi dotted preset skill overrides

* fix: migrate kimi legacy dotted skills without ai-skills flag

* fix: harden kimi migration and cache hook init options

* fix: apply kimi preset skill overrides without ai-skills flag

* fix: keep sequential branch numbering beyond 999

* test: align kimi scaffold skill path with hyphen naming

* chore: align hook typing and preset skill comment

* fix: restore AGENT_SKILLS_DIR_OVERRIDES compatibility export

* refactor: remove AGENT_SKILLS_DIR_OVERRIDES and update callers

* fix(ps1): support sequential branch numbers above 999

* fix: resolve preset skill placeholders for skills agents

* Fix legacy kimi migration safety and preset skill dir checks

* Harden TOML rendering and consolidate preset skill restore parsing

* Fix PowerShell overflow and hook message fallback for empty invocations

* Restore preset skills from extensions

* Refine preset skill restore helpers

* Harden skill path and preset checks

* Guard non-dict init options

* Avoid deleting unmanaged preset skill dirs

* Unify extension skill naming with hooks

* Harden extension native skill registration

* Normalize preset skill titles

tests/test_timestamp_branches.py

@@ -14,6 +14,7 @@ import pytest
 
 PROJECT_ROOT = Path(__file__).resolve().parent.parent
 CREATE_FEATURE = PROJECT_ROOT / "scripts" / "bash" / "create-new-feature.sh"
+CREATE_FEATURE_PS = PROJECT_ROOT / "scripts" / "powershell" / "create-new-feature.ps1"
 COMMON_SH = PROJECT_ROOT / "scripts" / "bash" / "common.sh"
 
 
@@ -147,6 +148,24 @@ class TestSequentialBranch:
                 branch = line.split(":", 1)[1].strip()
         assert branch == "003-next-feat", f"expected 003-next-feat, got: {branch}"
 
+    def test_sequential_supports_four_digit_prefixes(self, git_repo: Path):
+        """Sequential numbering should continue past 999 without truncation."""
+        (git_repo / "specs" / "999-last-3digit").mkdir(parents=True)
+        (git_repo / "specs" / "1000-first-4digit").mkdir(parents=True)
+        result = run_script(git_repo, "--short-name", "next-feat", "Next feature")
+        assert result.returncode == 0, result.stderr
+        branch = None
+        for line in result.stdout.splitlines():
+            if line.startswith("BRANCH_NAME:"):
+                branch = line.split(":", 1)[1].strip()
+        assert branch == "1001-next-feat", f"expected 1001-next-feat, got: {branch}"
+
+    def test_powershell_scanner_uses_long_tryparse_for_large_prefixes(self):
+        """PowerShell scanner should parse large prefixes without [int] casts."""
+        content = CREATE_FEATURE_PS.read_text(encoding="utf-8")
+        assert "[long]::TryParse($matches[1], [ref]$num)" in content
+        assert "$num = [int]$matches[1]" not in content
+
 
 # ── check_feature_branch Tests ───────────────────────────────────────────────