Reduce Optimization Warnings

[Lightning11wins]

Reduce more warnings that only occur when --enable-optimization is used. Some of these warning fixes also fix minor bugs and improve hardening.

GitHub Relationships

• Depends on: Reduce Warnings #95

These will need to be reviewed and merged into master before this PR is reviewed.

[Lightning11wins]

I haven't fixed all the warnings yet. I'll mark this as ready for review once more of them are resolved.

[Lightning11wins]

I finished resolving all the warnings when passing --enable-optimization.

[Lightning11wins]

@greptileai Please review.

[greptile-apps]

Greptile Summary

This PR reduces optimization-build warnings and hardens several previously undefined or unchecked paths.

• Adds explicit initialization, const-correctness, pointer casts, and unsupported-value guards across runtime and test code.
• Fixes credential-list allocation and cleanup handling, propagates widget-layout errors, and validates unsupported hashing and data types.
• Removes unused variables and obsolete code from HTML rendering, query, networking, reporting, utility, and test modules.

Confidence Score: 5/5

The PR appears safe to merge, with no concrete changed-code regression identified.

The behavior-affecting changes add error propagation, initialization, bounds handling, and cleanup safeguards, while the remaining edits are warning-oriented type corrections or removal of unused state.

Important Files Changed

Filename	Overview
centrallix/cxss/cxss_credentials_db.c	Initializes credential-list state, checks allocation and SQLite binding failures, and safely cleans up partial results.
centrallix/expression/exp_functions.c	Rejects unsupported hash algorithms and initializes aggregate evaluation status before use.
centrallix/objectsystem/obj_datatypes.c	Bounds money fractional formatting and reports malformed fractional values without changing valid-value behavior.
centrallix/wgtr/apos.c	Propagates recursive layout failures and removes unused bookkeeping while preserving layout side effects.
centrallix-lib/src/mtask.c	Locally suppresses intentional uninitialized-stack warnings required by the green-thread stack setup.
centrallix/utility/json_util.c	Removes unused datetime-presence tracking while retaining parsing and accepted-field behavior.

_{Reviews (1): Last reviewed commit: "Add comments to make dead code explicit." | Re-trigger Greptile}

[Lightning11wins]

This PR is cleared for human review.

[greptile-apps]

Too many files changed for review (136 files, 100 file limit).

Bypass the limit by tagging @greptile-apps to review.

[dpulls]

🎉 All dependencies have been resolved !

[gbeeley]

Is there a way to refresh this PR so it doesn't show those 114 or so changed files from PR #95 which has already been merged?

[Lightning11wins]

Yup, turns out merging master fixes it.

[Lightning11wins]

I conducted my own review and fixed several bugs. This PR looks fully ready to merge.

[gbeeley]

Fix needed for modulus clamping of fraction_part.

[gbeeley]

This will be better resolved once we merge the MoneyType representation PR, but I think this change makes the problem worse, though the warning message helps. It prevents weird output from a malformed MoneyType value, but it does so by hiding the malformed data and making it look like everything's okay. It'd be better to either have it print a malformed value weirdly, fold the out of range fraction_part into the integer_part, or else to return an error. The latter may be best here.

[Lightning11wins]

Alright, switching to returning an error.

[Lightning11wins]

Done.