docs: fix outdated Node 24 warnings in TROUBLESHOOTING.md

[oyi77]

Summary

Address Gemini code review feedback from PR #1340 by removing outdated Node.js 24 warnings and improving documentation consistency.

Changes

Documentation Fixes

• ✅ Line 18 (Quick Fixes table): Changed "You may be on Node.js 24+" to "Check Node.js version"
• ✅ Line 32 (Node.js Compatibility): Removed "Node.js 24+: better-sqlite3 is not supported" warning
• ✅ Line 52 (Supported versions): Updated from "Node.js 24+ is not supported" to "Node.js 24.x LTS (Krypton) is fully supported"
• ✅ Updated fix instructions to recommend Node 24 instead of Node 22

Code Improvements

• ✅ Dockerfile: Pinned base images to node:24.14.1-trixie-slim for build reproducibility
• ✅ nodeRuntimeSupport.ts: Clarified SUPPORTED_NODE_DISPLAY to show 24.0.0+ minimum version

Context

This PR addresses all 4 review comments from Gemini on PR #1340:

1. ✅ Pin Dockerfile builder stage to specific version
2. ✅ Pin Dockerfile runner stage to specific version
3. ✅ Fix outdated Node 24 warnings in TROUBLESHOOTING.md (lines 18, 32, 52)
4. ✅ Standardize version display string to show minimum patch version

Testing

Documentation changes only — no functional changes to code.

Related

• Fixes post-merge feedback from PR feat: add Node.js 24 LTS (Krypton) support #1340
• Gemini review: feat: add Node.js 24 LTS (Krypton) support #1340 (review)

[gemini-code-assist]

Code Review

This pull request updates the project to officially support and recommend Node.js 24.x. Key changes include pinning the Docker base image to Node 24.14.1, updating the troubleshooting documentation to reflect Node 24 compatibility, and refining runtime support utility strings. The review feedback suggests minor documentation improvements to ensure consistency regarding Node 24's status and to clarify that the recommended version verification applies specifically to the 24.x LTS line.

[gemini-code-assist]

The description of the "most common case" for Node.js version issues should be updated to include Node 24, as it is now a supported and recommended version. This ensures the documentation remains consistent with the changes made elsewhere in this PR.

Suggested change

	**Cause:** You are running a Node.js version outside OmniRoute's approved secure runtime floor. The most common case is running an older Node 20/22 patch level that falls below the patched security floor OmniRoute requires.
	**Cause:** You are running a Node.js version outside OmniRoute's approved secure runtime floor. The most common case is running an older Node 20, 22, or 24 patch level that falls below the patched security floor OmniRoute requires.

[gemini-code-assist]

The verification step should specify that the version should be on the 24.x line. Without this clarification, "v24.0.0 or newer" could be interpreted as including Node 25+, which is explicitly excluded from the supported range (<25) and the engines field in package.json.

Suggested change

	2. Verify your version: `node --version` should show `v24.0.0` or newer
	2. Verify your version: node --version should show v24.0.0 or newer on the 24.x LTS line

[oyi77]

Gemini Review Addressed ✅

Applied both suggestions from the code review:

1. Line 30: Updated to include Node 24 in the "most common case" description:

   • Now: "older Node 20, 22, or 24 patch level"
   • Was: "older Node 20/22 patch level"

2. Line 45: Clarified version verification to specify 24.x LTS line:

   • Now: "should show v24.0.0 or newer on the 24.x LTS line"
   • Was: "should show v24.0.0 or newer"

This prevents confusion with Node 25+ which is explicitly excluded from the supported range.

Commit: 9a8b7c8

[diegosouzapw]

Thanks @oyi77 for this great contribution! 🎉 This PR has been evaluated and successfully integrated into the release/v3.6.7 branch and will be part of the final production release. We appreciate your effort!