[WIP] Fix all issues and ensure all options work end-to-end

[Copilot]

Thanks for asking me to work on this. I will get started on it and keep this PR's description up to date as I form a plan and make progress.

Original prompt

Fix ALL problems in this repository and make EVERY option it exposes actually work end-to-end. Do not stop to ask for confirmation. Proceed and open a working pull request.

CONTEXT
This is a Magisk / KernelSU style root module that applies ColorOS-style themes and system UI tweaks to rooted Oppo / Realme / OnePlus devices, targeting Android 15 / 16 / 17. Key files/dirs: module.prop, customize.sh, service.sh, post-fs-data.sh, uninstall.sh, config/settings.conf.example, scripts/ (check-theme-size.sh, inspect-theme-package.py, package.sh, validate-module.sh), customer-options/ (options.json, root-options.json, feature-parking-v055.json, feature-visibility.json, ui-style.json, ui-2026-standard-premium.json, safe-defaults.conf), components/, themes/, theme-packs/, system_ext/, lsposed-helper/, docs/.

GOALS (implement all, in a working way)

1. Correctness first: read every shell script, python script, JSON and conf file. Fix all bugs, broken paths, unquoted variables, missing error handling, syntax errors, invalid JSON, and shellcheck-level issues. Make scripts idempotent and safe to re-run.
2. Make ALL customer options actually functional. Every option declared in customer-options/*.json (options.json, root-options.json, feature-parking, feature-visibility, ui-style, ui-2026-standard-premium) and every setting in config/settings.conf.example and customer-options/safe-defaults.conf must be: (a) parsed at install/boot time, (b) validated with sane defaults, and (c) actually applied by the module. If an option is currently declared but never read or applied ('parked'/dead config), wire it up so it takes effect, or clearly wire it into a working code path. No option should be cosmetic-only.
3. Add a real settings loader: a single sourced shell library (e.g. scripts/lib-options.sh) that loads defaults, then user overrides, exposes each option as a variable, and is consumed by customize.sh / service.sh / post-fs-data.sh. Use a JSON parser that works in the module runtime (busybox-compatible; avoid depending on jq unless you bundle/guard it).
4. Robust root/system support: ensure theme overlays and system_ext content mount/apply correctly via magic mount / overlayfs on Android 15/16/17. Handle A/B and dynamic partitions, verify mount points exist, and fail gracefully with clear log messages instead of bricking. uninstall.sh must cleanly revert everything.
5. Compatibility: detect device brand (Oppo/Realme/OnePlus) and ColorOS/Android version, and branch behavior accordingly. Do not hardcode a single device.
6. Safety & security: no hardcoded secrets/tokens. Guard destructive operations. Never write outside module-owned paths without checks. Document any real risk of rooted/system modification in docs/.
7. Validation & DX: make scripts/validate-module.sh actually validate module.prop, required files, and JSON option schemas, and have it pass. Fix inspect-theme-package.py and package.sh so packaging produces a flashable zip. Add a CI check under .github if reasonable.
8. Docs: update README.md and docs/ so every supported option is listed with its default, allowed values, and effect, plus install/uninstall instructions.

DELIVERABLE
One clean, production-ready PR against main containing all fixes, the working options pipeline, passing validation, and updated docs. Summarize in the PR body exactly which problems were fixed and which options are now functional, and list any change that carries a system-modification risk.

[devloai]

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