Auto-fill ČSFD links on import, rename in pool, multi-country tags, Filmotéka layout

CHANGELOG.md

@@ -25,8 +25,17 @@ Each version entry uses these sections (include only those that apply):
 - Fork of the former **Tagger** project as **Curator**, a movie-library manager.
 - **Pool** concept (single source of truth) with `Filmy` / `Seriály` folders and
   a configurable **Filmotéka** output folder, stored in the global config.
-- "Import movie" flow: pick a video, enter Title + ČSFD link, the file is copied
-  into `pool/Filmy` as `Title.ext` (non-destructive) and indexed.
+- **Multi-file "Import movies" flow**: pick several videos at once and give each
+  its own Title + ČSFD link (one row per file, more addable in the dialog); a
+  copy/move toggle chooses whether sources are copied (default, non-destructive)
+  or moved into `pool/Filmy` as `Title.ext`. Imported movies are indexed and, if
+  a ČSFD link is set, enriched with tags right away.
+- **Auto-find ČSFD links** in the import dialog ("🔎 Najít ČSFD odkazy"): for
+  every row without a link it cleans the filename into a query
+  (`clean_filename_to_query` strips resolution/codec/source/group, keeps the
+  year) and fills in the first ČSFD search hit (`find_csfd_url` →
+  `search_movies`, reusing one Anubis session). Existing links are never
+  overwritten; results are a suggestion the user can review before importing.
 - `File` now stores `title` and `csfd_link`.
 - New **PySide6** GUI reframed around the Filmotéka workflow (pool setup, import,
   tag filter sidebar, movie table, one-click Filmotéka generation), replacing the
@@ -44,9 +53,17 @@ Each version entry uses these sections (include only those that apply):
 - Project `README.md` (overview, concepts, workflow, run/build instructions).
 - **ČSFD scraping** (`csfd.py`, ported from the Tagger devel branch): fetches
   movie data from a ČSFD link (JSON-LD + HTML parsing). `File.apply_csfd_tags`
-  assigns Žánr / Rok / Země původu tags and caches the fetched data in the metadata.
-  The GUI auto-fetches on import when a link is given and offers "Načíst tagy
-  z ČSFD" for selected movies.
+  assigns **Žánr / Rok / Země původu / Hodnocení** tags and caches the fetched
+  data (incl. directors and the first 10 actors) in the metadata. The rating is
+  bucketed into ten-point bands (`rating_band`, e.g. `80–89 %`, `90–100 %`).
+  **Directors and actors are collected but intentionally not turned into tags or
+  Filmotéka folders** — there would be far too many. The GUI auto-fetches on
+  import when a link is given and offers "Načíst tagy z ČSFD" for selected movies.
+- **Rename a pooled movie** from the app ("Přejmenovat…" in the Movie menu /
+  context menu, F2): `FileManager.rename_movie` renames the physical file in
+  pool/Filmy to `<new name>.<ext>` (extension preserved), moves its metadata to
+  the new index key, and syncs `title`/`filename`. Refuses empty names, names
+  with path separators, and collisions with an existing pooled file.
 - App startup injects `truststore` so HTTPS uses the OS certificate store —
   ČSFD fetching works behind corporate SSL inspection (where certifi's bundle
   lacks the proxy root CA).
@@ -64,14 +81,32 @@ Each version entry uses these sections (include only those that apply):
   fetch pays the PoW cost). Žánr / Rok / Země původu tags load again.
 - "Assign tags" dialog crashed on PySide6/Qt6 — `Qt.ItemIsTristate` was renamed
   to `Qt.ItemIsAutoTristate`.
+- Sidebar tag-filter checkboxes never appeared checked: every toggle triggered a
+  table refresh that rebuilt the tree from scratch (all unchecked), wiping the
+  click. The active filter is now kept in a separate model (`_active_filter`) and
+  restored on rebuild. The count after each tag is also now filter-aware — it
+  shows how many of the currently filtered movies carry that tag (i.e. how many
+  would remain if it were checked), instead of always the pool-wide total. The
+  refresh is deferred via `QTimer.singleShot` so the tree is not rebuilt inside
+  its own `itemChanged` signal (which deleted the item Qt was still processing
+  and crashed the app with SIGSEGV on a real click).
 
 ### Changed
 - ČSFD country tag category renamed **Země → Země původu**. Added
   `scripts/migrate_tag_category.py` to rewrite the category in an existing pool
   index (backs up `.Curator.!index` first); run against the live pool.
-- Filmotéka tree now also builds the **Země původu** branch — it was missing
-  from `FILMOTEKA_CATEGORIES`, so the country level was never generated. Tree
-  categories are now Rok / Žánr / Země původu / Hodnocení.
+- Filmotéka tree **relaid out**: genre folders now sit **directly at the output
+  root** (next to the copy-as-is Seriály mirror), with year tags grouped under a
+  **`Dle roku`** folder and country tags under **`Dle země původu`**.
+  `HardlinkManager` gained a category → root-folder map (`category_roots`,
+  empty root = tag folders at the output root) and now restricts obsolete-link
+  cleanup to the tag-tree's own top-level folders, so copy-as-is mirrors are
+  never touched. The tree also groups the ČSFD rating under `Dle hodnocení`.
+- ČSFD origin is now parsed as **multiple countries**: a co-production like
+  "USA / Velká Británie" becomes a separate **Země původu** tag per country
+  (so the film is filed under each), instead of one combined tag. `CSFDMovie`
+  gained `countries: list[str]` (replacing the single `country`); the csfd cache
+  schema bumped to v2 (legacy single-country caches are split on read).
 - Movie table trimmed to **Název / Štítky / Velikost** — the Datum and ČSFD
   columns were dropped (a ČSFD link is a prerequisite, so its indicator was
   always the same).