feat: add diagnostic utility script

Added features/diagnostic.mjs to help users verify their local TORCH environment.
Includes checks for Node.js version, dependencies, configuration, and connectivity.

Co-authored-by: PR0M3TH3AN <[email protected]>

src/context/CONTEXT_feature-proposer-agent-diagnostic.md

@@ -0,0 +1,13 @@
+# Context: Diagnostic Utility Script
+
+## Goal
+Create a standalone diagnostic utility to help users verify their local TORCH environment.
+
+## Scope
+- Implement `features/diagnostic.mjs`.
+- Checks for Node version, dependencies, config, file system, git, and connectivity.
+- No new dependencies.
+
+## Constraints
+- Single file implementation.
+- Must not modify existing files (except for adding the new feature).

src/decisions/DECISIONS_feature-proposer-agent-diagnostic.md

@@ -0,0 +1,12 @@
+# Decision: Implement Diagnostic Utility
+
+## Context
+New users or agents may struggle with setting up the environment correctly (Node version, missing config, etc.).
+
+## Decision
+Implemented `features/diagnostic.mjs` as a self-contained script to verify the environment.
+
+## Rationale
+- Low hanging fruit: high value for troubleshooting, low effort to implement.
+- Fits "New Utility Scripts" scope.
+- No external dependencies required beyond what's already in the project.

src/test_logs/TEST_LOG_feature-proposer-agent-diagnostic.md

@@ -0,0 +1,12 @@
+# Test Log: Diagnostic Utility
+
+## Manual Verification
+
+- Command: `node features/diagnostic.mjs`
+- Result: Passed (All checks green).
+
+- Command: `mv torch-config.json torch-config.json.bak && node features/diagnostic.mjs`
+- Result: Failed as expected (Exit code 1, missing config reported).
+
+- Command: `npm install && node features/diagnostic.mjs`
+- Result: Passed (Dependencies verified).

src/todo/TODO_feature-proposer-agent-diagnostic.md

@@ -0,0 +1,7 @@
+# Pending Tasks
+- [x] Analyze codebase.
+- [x] Brainstorm features.
+- [x] Implement `features/diagnostic.mjs`.
+- [x] Verify implementation.
+- [x] Create run artifacts.
+- [ ] Submit changes.