Add connection quality indicator UI state

[konard]

Summary

• Add shared connection quality states and latency thresholds for testing, direct, proxy, degraded, and offline modes.
• Expose safe connectionQuality view state from the proxy settings UI model, including route type, label, tone, latency, and proxy id without proxy secrets.
• Add unit coverage for connection quality transitions and secret-safe failure states.

Fixes #39

Tests

• npm test
• npm run validate:foundation
• npm run validate:release
• npm run decompose:dry-run

Screenshots

• Not applicable: this repository currently exposes shared UI state without a rendered frontend shell for this indicator.

Risks / Follow-up

• Future platform wrappers should render the new connectionQuality state using their native UI components.

[konard]

Solution summary

Implemented and pushed the fix for issue #39.

Changes:

• Added shared connection quality states and latency thresholds in src/foundation/proxy-settings-view.mjs.
• Exposed connectionQuality UI state for testing, direct, proxy, degraded, and offline.
• Added updateConnectionQuality() for state transitions.
• Ensured proxy failure/quality state does not expose secure proxy references.
• Added unit coverage in test/proxy-settings-view.test.mjs.

Validation passed locally:

• npm test
• npm run validate:foundation
• npm run validate:release
• npm run decompose:dry-run

PR updated and marked ready for review: #83

GitHub checks for latest commit 624455c are passing.

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This summary was automatically extracted from the AI working session output.

[konard]

🤖 Solution Draft Log

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💰 Cost estimation:

• Model: GPT-5.5
• Provider: OpenAI
• Public pricing estimate: $1.515299

📊 Context and tokens usage:

• 810.6K / 1.1M (77%) input tokens, 5.8K / 130K (4%) output tokens

Total: (49.2K + 761.3K cached) input tokens, 5.8K output tokens, $1.515299 cost

🤖 Models used:

• Tool: OpenAI Codex
• Requested: gpt-5.5
• Model: GPT-5.5 (gpt-5.5)

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