Add Python init diagnostics, AppImage build system, misc Linux fixes

- python: switch Py_InitializeEx → Py_InitializeFromConfig for explicit
  error reporting; add dladdr + fprintf diagnostics to trace which DSO
  Python symbols resolve to and whether Py_IsInitialized succeeds
- python: log RTLD_NOLOAD vs fresh-load outcome when promoting libpython
  to RTLD_GLOBAL
- build: add Docker-based AppImage build script (build.sh), update
  Dockerfile and build-inner.sh for AppImage-only workflow
- build: remove Flatpak support entirely; move AppImage metadata
  (desktop/metainfo/icon) from flatpak/ to data/
- Add Monster Hunter Wilds basic_games plugin
- .gitignore: exclude squashfs-root, build-source, flatpak-repo,
  __pycache__, fomod-plus-settings.ini
- Various Linux port fixes across wineprefix, processrunner, proton
  launcher, FUSE connector, instance manager, download manager,
  sanitychecks, and NaK Rust paths/runtime_wrap

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/libs/nak/src/paths.rs b/libs/nak/src/paths.rs
index e86c284..f6dde6c 100644
--- a/libs/nak/src/paths.rs
+++ b/libs/nak/src/paths.rs
@@ -1,11 +1,11 @@
 //! Shared data directory for Fluorine Manager.
 //!
-//! All data lives under `~/.var/app/com.fluorine.manager/`.
+//! All data lives under `~/.local/share/fluorine/`.
 
 use std::path::PathBuf;
 
-/// Returns the Fluorine data directory (`~/.var/app/com.fluorine.manager`).
+/// Returns the Fluorine data directory (`~/.local/share/fluorine`).
 pub fn data_dir() -> PathBuf {
     let home = std::env::var("HOME").unwrap_or_else(|_| "/tmp".to_string());
-    PathBuf::from(home).join(".var/app/com.fluorine.manager")
+    PathBuf::from(home).join(".local/share/fluorine")
 }