docs(dev): update repo layout for PSR-4 + chore(gitignore): ignore local data, IDE files, and tooling caches

.gitignore

@@ -1 +1,28 @@
-/data/
+/data/
+.DS_Store
+
+# Editor/IDE
+.idea/
+.vscode/
+
+# Local env/secrets
+.env
+.env.*
+!.env.example
+
+# Local runtime data (avoid accidentally committing user files)
+/uploads/
+/users/
+/metadata/
+/sessions/
+
+# Tooling caches
+.phpunit.result.cache
+.phpcs-cache
+.php-cs-fixer.cache
+
+# Logs/temp
+*.log
+*.swp
+*.swo
+*~

docs/wiki/dev guide.md

@@ -5,9 +5,13 @@ Contributions are welcome. See `CONTRIBUTING.md` for workflow and PR guidelines.
 ## Repo structure (core)
 
 - `public/` - frontend assets + entrypoints (`index.html`, `api.php`, `webdav.php`)
-- `src/controllers/` - request handlers
-- `src/models/` - data logic (users, auth, admin config)
-- `src/lib/` - shared utilities (ACL, crypto, storage)
+- `src/FileRise/` - PSR-4 backend tree (namespaced `FileRise\\...`)
+  - `src/FileRise/Http/Controllers/` - request handlers
+  - `src/FileRise/Domain/` - models / business logic (users, auth, admin config, etc.)
+  - `src/FileRise/Support/` - shared utilities (ACL, crypto, filesystem helpers)
+  - `src/FileRise/Storage/` - storage + sources
+  - `src/FileRise/WebDAV/` - WebDAV support
+- `src/controllers/`, `src/models/`, `src/lib/`, `src/webdav/` - legacy shims (compat layer via `class_alias`)
 - `scripts/` - CLI helpers (e.g., `scan_uploads.php`)
 
 ## Local dev quick start
@@ -27,7 +31,7 @@ FR_TEST_META_DIR=/tmp/filerise/metadata
 
 ## OpenAPI spec
 
-- Source: `src/openapi/` and `public/api/` annotations
+- Source: `src/FileRise/OpenApi/` and `public/api/` annotations
 - Generate spec:
 
 ```bash