NodeLab is a standalone, single-file, in-browser tool for pairing ShotMarker targets with chronograph strings and running node-confidence analysis — fully locally.

No installs. No cloud. No accounts. Your data stays on your machine.

• Live (GitHub Pages): https://mrimp.github.io/NodeLab/
• Offline: download NodeLab_LATEST.html from this repo and double-click (Chrome/Edge recommended).

• Offline hardening: runtime blocks accidental network calls (fetch/XHR/WebSocket) and logs attempts.
• Offline Self-Test panel: confirms no external URLs, network APIs are blocked, and storage is working.
• Portable mode: export/import a single bundle that includes session data plus NodeLab settings.

1. Load ShotMarker file(s)
2. Load chrono file(s)
3. Step 3: Pair each target to exactly one chrono string
4. Run Analysis
5. Export JSON snapshot (filename includes ShotMarker name + timestamp)

• Imports ShotMarker targets and identifies scored shots (sighters excluded from scoring)
• Loads chronograph files and maps them to targets via Step 3 pairing
• Produces ranked results with a confidence badge that explains without dictating
• Exports a JSON snapshot: NodeLab_<SessionOrShotMarkerName>_<YYYY-MM-DD>_<HHMM>.json

These are representative UI screens. If you fork/customize the UI, update these.

• Overview (placeholder):
• Step 3 pairing (placeholder):
• Results (placeholder):

Some behaviors are browser + security-model specific (especially under file://). See: docs/BROWSER_NOTES.md

Open Offline reliability → Run Offline Self-Test. It checks for external URLs, confirms network APIs are blocked, and verifies storage.

Use Offline reliability → Export portable bundle to export:

• Session data (targets, chrono strings, pairings, results)
• NodeLab settings stored in localStorage

Import it later with Import portable bundle.

NodeLab runs entirely in your browser. All parsing and analysis runs locally.

When opening an issue, include:

• what file types you loaded (ShotMarker + chrono)
• the on-screen warning/error text
• a screenshot of Step 3 pairing + results

NodeLab exports analysis results as versioned JSON snapshots for use with companion tools (e.g., BarrelTracker).

The export contract is defined here: ➡️ docs/SNAPSHOT_SPEC.md

Semantic versioning, tagging flow, and a release checklist: ➡️ docs/RELEASE.md