chore(mobile): remove references to fvm, add mise docs, use java 21 (#25703)

mobile/.fvmrc

@@ -1,3 +0,0 @@
-{
-  "flutter": "3.35.7"
-}

mobile/.gitignore

@@ -55,8 +55,5 @@ default.isar
 default.isar.lock
 libisar.so
 
-# FVM Version
-.fvm/
-
 # Translation file
-lib/generated/
+lib/generated/

mobile/.vscode/settings.json

@@ -2,7 +2,9 @@
   "dart.flutterSdkPath": ".fvm/versions/3.35.7",
   "dart.lineLength": 120,
   "[dart]": {
-    "editor.rulers": [120]
+    "editor.rulers": [
+      120
+    ]
   },
   "search.exclude": {
     "**/.fvm": true

mobile/README.md

@@ -4,10 +4,12 @@ The Immich mobile app is a Flutter-based solution leveraging the Isar Database f
 
 ## Setup
 
-1. Setup Flutter toolchain using FVM.
-2. Run `flutter pub get` to install the dependencies.
-3. Run `make translation` to generate the translation file.
-4. Run `fvm flutter run` to start the app.
+1. [Install mise](https://mise.jdx.dev/installing-mise.html).
+2. Change to the immich directory and trust the mise config with `mise trust`.
+3. Install tools with mise: `mise install`.
+4. Run `flutter pub get` to install the dependencies.
+5. Run `make translation` to generate the translation file.
+6. Run `flutter run` to start the app.
 
 ## Translation
 
@@ -29,7 +31,7 @@ dcm analyze lib
 ```
 
 [DCM](https://dcm.dev/) is a vendor tool that needs to be downloaded manually to run locally.
-Immich was provided an open source license. 
+Immich was provided an open source license.
 To use it, it is important that you do not have an active free tier license (can be verified with `dcm license`).
 If you have write-access to the Immich repository directly, running dcm in your clone should just work.
 If you are working on a clone of a fork, you need to connect to the main Immich repository as remote first: