STANDROID v0.7.0 — Extension Updates Support (Implement isomorphic-git)

Bug fixes

Extension Update failing with "refusing to merge unrelated histories"

• The "Update Extension" button in SillyTavern threw GitResponseError: refusing to merge unrelated histories
• Root cause: simple-git's git pull fails when the local extension repo and remote have diverged histories (common after Import User Data from backup)
• Fixed: replaced git.pull() with fetch + force-reset (equivalent to git fetch && git reset --hard origin/<branch>) — no merge operation is attempted