feat(autocomplete): Add id field to autocomplete cache

[kiloconnect]

Summary

This PR adds an id field to the autocomplete cache and updates visibility tracking to use that id instead of the prefix, suffix, suggestion triplet.

Changes

• Added id property to FillInAtCursorSuggestion type in types.ts
• Updated getSuggestionKey() in AutocompleteTelemetry.ts to return the id instead of the triplet
• Generate unique id when creating new suggestions in processSuggestion()
• Updated tests to include the id field in test suggestions

Files Changed

• src/services/ghost/types.ts - Added id to FillInAtCursorSuggestion
• src/services/ghost/classic-auto-complete/AutocompleteTelemetry.ts - Updated getSuggestionKey()
• src/services/ghost/classic-auto-complete/GhostInlineCompletionProvider.ts - Generate id in processSuggestion()
• src/services/ghost/classic-auto-complete/__tests__/AutocompleteTelemetry.test.ts - Updated test helper

[changeset-bot]

🦋 Changeset detected

Latest commit: ef11479

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[kiloconnect]

Code Review Summary

Status: 1 Issue Found | Recommendation: Address before merge

Overview

Severity	Count
CRITICAL	0
WARNING	1
SUGGESTION	0

Issue Details (click to expand)

WARNING

File	Line	Issue
.changeset/funny-kiwis-begin.md	N/A	Empty changeset file - needs proper content with package name, version bump type, and description

Details:

The changeset file is empty. According to the project's AGENTS.md rules, each PR requires a changeset with proper format:

---
"kilo-code": patch
---

Brief description of the change

Please add the appropriate content describing this change (adding id field to FillInAtCursorSuggestion for unique suggestion tracking).

Files Reviewed (5 files)

• .changeset/funny-kiwis-begin.md - 1 issue (empty changeset)
• src/services/ghost/types.ts - No issues
• src/services/ghost/classic-auto-complete/AutocompleteTelemetry.ts - No issues
• src/services/ghost/classic-auto-complete/GhostInlineCompletionProvider.ts - No issues
• src/services/ghost/classic-auto-complete/__tests__/AutocompleteTelemetry.test.ts - No issues

---

Code Quality Notes:

The code changes themselves look well-structured:

• The id field is properly added to the FillInAtCursorSuggestion interface
• All creation sites are updated to generate UUIDs using crypto.randomUUID()
• The getSuggestionKey function is correctly updated to use the new id field
• Test helper is updated to include the id field

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