Translate the remaining French and Turkish

mise.toml, the comments in app/build.gradle (corrected where they no
longer described the build: the car build is signed by build-car, and
the updater reads the version from build-car's file name), OTA.md's
message table (now the updater's current English messages), the Turkish
messages quoted in CHANGELOG.md and OTA.md (glossed in English), two
test assertion messages, an icon comment, and the ignition-state comment
in EVHardware.kt. The vendored EVHardware library still has about 120
half-French comment lines; noted in SPECS.md.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01QLJfZQZeAKAwSqViTmLzki

CHANGELOG.md

@@ -39,7 +39,7 @@
 
 - Charging sessions are now metered on DC only (10 kW and above). An AC charge is an
   overnight affair the head unit sleeps through, so its curve, duration and energy were
-  guesses; the charging screen labels one as `AC şarj (ölçülmüyor)` rather than showing
+  guesses; the charging screen labels one as `AC şarj (ölçülmüyor)` ("AC charging (not metered)") rather than showing
   the previous DC session's figures next to it.
 
 ### Fixed
@@ -246,7 +246,7 @@ All notable changes to this project are documented here. Format follows
 - OTA installs now go through the platform `PackageInstaller` instead of shelling out to
   `pm install -r`. The old path handed the package manager service a file inside the app's
   private cache, which it cannot read from its own process, and every such failure was
-  reported as `Kurulum reddedildi (imza uyuşmuyor?)` — a signature verdict on a correctly
+  reported as `Kurulum reddedildi (imza uyuşmuyor?)` ("installation refused (signature mismatch?)") — a signature verdict on a correctly
   signed build. A session streams the archive from this process, so no second process has
   to reach our cache. Approach taken from merthankaraman/DriveHub_Dort, which solved the
   same problem on the same head unit.