feat(vscode): Add telemetry for charting tool

[cosi-conda]

Issue

• Add telemetry to charting tool to capture the event in which the charting is used.
• Add a unit test for this event in the telemetry tests.

Implementation

Leverage the @kilocode/kilo-telemetry existing tracking function to capture a new chart event.

How to Test

Manual/local verification

1. Open a kilo session in the VS code extension
2. Ask to render a sample chart such as a bar chart:
   "Can you make a sample bar chart?"

3. Executing this should capture a chart tool event
4. Verify the event can be seen remotely

Checklist

• Issue linked above, or exception explained
• Tests/verification described
• Screenshots/video included for visual changes, or marked N/A
• Changeset considered for user-facing changes
• I personally reviewed the diff and can explain the changes, including any AI-assisted work.

[kilo-code-bot]

Code Review Summary

Status: 1 Issue Found | Recommendation: Address before merge

Overview

Severity	Count
CRITICAL	0
WARNING	0
SUGGESTION	1

Issue Details (click to expand)

SUGGESTION

File	Line	Issue
packages/opencode/src/kilocode/tool/chart.ts	70	Telemetry.trackToolUsed only fires on successful renders — failed validations emit no Tool Used event, unlike codebase_search which tracks all invocations

Files Reviewed (2 files)

• packages/opencode/src/kilocode/tool/chart.ts - 1 issue
• packages/kilo-telemetry/src/__tests__/telemetry.test.ts - 0 issues

Fix these issues in Kilo Cloud

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_{Reviewed by kimi-k3 · Input: 53.9K · Output: 8.9K · Cached: 519K}

_{Review guidance: REVIEW.md from base branch main}