🐞 fix: Even more git fixes

README.md

@@ -102,6 +102,7 @@ Ironpad can automatically sync the `data/` git repo with a private remote over S
 3. Set:
    - `IRONPAD_GIT_REMOTE_URL` (example: `git@github.com:your-org/ironpad-data.git`)
    - `IRONPAD_GIT_SSH_PRIVATE_KEY` (path inside container)
+   - `IRONPAD_GIT_SSH_KNOWN_HOSTS` (optional; defaults to `/root/.ssh/known_hosts`)
    - `IRONPAD_GIT_SYNC_INTERVAL_SECS` (example: `300`)
 4. Recreate the stack:
 
@@ -112,6 +113,7 @@ docker compose up -d --build
 Sync behavior:
 - Every cycle: `fetch -> safe fast-forward if possible -> push`
 - If local and remote diverge, auto fast-forward is skipped and a warning is logged.
+- If libgit2 SSH auth fails, Ironpad can fall back to `git` CLI (controlled by `IRONPAD_GIT_USE_CLI_FALLBACK`, default `true`).
 
 ## Tech Stack
 
@@ -174,8 +176,10 @@ Read about the method:
 | Git sync interval | `0` (disabled) | Set `IRONPAD_GIT_SYNC_INTERVAL_SECS` to enable scheduled sync |
 | Git SSH private key | not set | `IRONPAD_GIT_SSH_PRIVATE_KEY` path to private key in container |
 | Git SSH public key | not set | Optional `IRONPAD_GIT_SSH_PUBLIC_KEY` path |
+| Git known_hosts path | `/root/.ssh/known_hosts` | Override with `IRONPAD_GIT_SSH_KNOWN_HOSTS` |
 | Git SSH username | `git` | Override with `IRONPAD_GIT_SSH_USERNAME` if needed |
 | Git SSH passphrase | not set | Optional `IRONPAD_GIT_SSH_PASSPHRASE` |
+| Git CLI fallback | `true` | `IRONPAD_GIT_USE_CLI_FALLBACK` for fetch/push auth fallback |
 | Auto-save | 1 second debounce | Frontend saves after typing stops |
 
 ## Documentation