Fix Gitea wiki filenames: use percent-encoded Cyrillic slugs.

Unicode names caused HTTP 500 in the wiki UI; match Gitea storage format.

README.md

@@ -45,7 +45,7 @@ python3 export_1c_help.py --version
 |------|------------|
 | `Home.md` | оглавление по типам метаданных |
 | `_Sidebar.md` | боковая навигация (объекты без форм) |
-| `«Заголовок».md` / `%D0%….md` | страницы справки (кириллица — percent-encoded, как в Gitea) |
+| `«Заголовок».md` / `%D0%….md` | страницы справки (кириллица в git — **percent-encoded**, как хранит Gitea) |
 | `manifest.json` | карта `meta_key` → title / filename |
 
 | Параметр | Описание |

export1c_help/naming.py

@@ -10,7 +10,8 @@ from export1c_help.discover import HelpPage
 
 _INVALID = re.compile(r'[\\/:*?"<>|#\[\]]+')
 _SPACES = re.compile(r"\s+")
-_MAX_NAME_BYTES = 180
+# Keep slug short so percent-encoded form fits in 255-byte FS names
+_MAX_SLUG_BYTES = 72
 
 
 def sanitize_title(title: str) -> str:
@@ -38,17 +39,21 @@ def _short_hash(s: str) -> str:
 
 
 def wiki_filename(title: str, *, meta_key: str | None = None) -> str:
-    """Unicode wiki slug (spaces → «-»)."""
-    slug = sanitize_title(title).replace(" ", "-")
-    # reserve room for optional -xxxxxxxx suffix
-    slug = _truncate_utf8(slug, _MAX_NAME_BYTES)
-    return f"{slug}.md"
+    """
+    Gitea wiki stores non-ASCII page names as percent-encoded «Slug.md».
 
-
-def wiki_filename_gitea_legacy(title: str) -> str:
+    Slug = title with spaces → «-», truncated so encoded length ≤ 255.
+    """
     slug = sanitize_title(title).replace(" ", "-")
-    slug = _truncate_utf8(slug, 80)
-    return quote(slug, safe="-_.") + ".md"
+    slug = _truncate_utf8(slug, _MAX_SLUG_BYTES)
+    if meta_key:
+        # stable disambiguator when truncated
+        pass
+    encoded = quote(slug, safe="-_.") + ".md"
+    if len(encoded) > 255 and meta_key:
+        slug = _truncate_utf8(slug, 50) + "-" + _short_hash(meta_key)
+        encoded = quote(slug, safe="-_.") + ".md"
+    return encoded
 
 
 def decode_wiki_filename(name: str) -> str:
@@ -60,11 +65,7 @@ def assign_titles(
     pages: list[HelpPage],
     h1_by_meta: dict[str, str | None],
 ) -> tuple[dict[str, str], dict[str, str]]:
-    """
-    Returns (meta_key → title, meta_key → filename).
-
-    Filenames are unique even after UTF-8 truncation.
-    """
+    """Returns (meta_key → title, meta_key → filename)."""
     used_title: set[str] = set()
     used_file: set[str] = set()
     titles: dict[str, str] = {}
@@ -87,15 +88,13 @@ def assign_titles(
                 title = sanitize_title(p.meta_key)
                 break
 
-        fname = wiki_filename(title)
+        fname = wiki_filename(title, meta_key=p.meta_key)
         if fname.casefold() in used_file:
-            stem = fname[:-3]
-            stem = _truncate_utf8(stem, _MAX_NAME_BYTES - 9)
-            fname = f"{stem}-{_short_hash(p.meta_key)}.md"
-        # last-resort unique
+            slug = _truncate_utf8(sanitize_title(title).replace(" ", "-"), 50)
+            fname = quote(f"{slug}-{_short_hash(p.meta_key)}", safe="-_.") + ".md"
         guard = 0
         while fname.casefold() in used_file:
-            fname = f"page-{_short_hash(p.meta_key + str(guard))}.md"
+            fname = quote(f"page-{_short_hash(p.meta_key + str(guard))}", safe="-_.") + ".md"
             guard += 1
 
         used_title.add(title.casefold())