* Ensure API update is sent on script exit
Add exit-time telemetry handling across scripts to avoid orphaned "installing" records. Introduce local exit_code capture in api_exit_script and cleanup handlers and, when POST_TO_API_DONE is true but POST_UPDATE_DONE is not, post a final status (marking failures on non-zero exit codes, or marking done/failed in VM cleanups based on exit code). Changes touch misc/build.func, misc/vm-core.func and various vm/*-vm.sh cleanup functions to reliably send post_update_to_api on normal or early exits.
* Update api.func
* fix(telemetry): add missing exit codes to explain_exit_code()
- Add curl error codes: 4, 5, 8, 23, 25, 30, 56, 78
- Add code 10: Docker/privileged mode required (used in ~15 scripts)
- Add code 75: Temporary failure (retry later)
- Add BSD sysexits.h codes: 64-77
- Sync error_handler.func fallback with canonical api.func
* fix(telemetry): improve error reporting with structured error strings and better categorization
- Add build_error_string() that creates structured format:
'exit_code=N | description\n---\n<last 20 log lines>'
- Fix categorize_error() to map ALL known exit codes:
- Added: shell(1,2), proxmox(200-231), service(150-154),
database(170-193), runtime(243-249), signal(139,141,143)
- Split timeout from network (28 was in both)
- Added DPKG(255) to dependency category
- Update all API functions to use build_error_string():
post_update_to_api, post_update_to_api_extended,
post_tool_to_api, post_addon_to_api
- Add ensure_log_on_host() calls to on_exit, on_interrupt,
on_terminate handlers to prevent race condition where
telemetry reports before container log is pulled to host
* fix(ui): improve error output formatting and remove redundant log paths
- error_handler: Use msg_info/msg_ok/msg_warn for container cleanup
instead of raw echo with manual ANSI codes
- error_handler: Add ❓ icon before 'Remove broken container?' prompt
- error_handler: Indent log output with TAB for visual consistency
- build.func: Use msg_custom for installation log path display
- build.func: Use msg_info → msg_ok for container removal flow
- build.func: Use msg_warn for 'kept for debugging' message
- core.func/vm-core.func: Remove redundant container-internal log
path display (📋 View full log) since combined log on host is
the canonical location shown after failure
