refactor(ide ext): Update port file name + switch to 1-based index for characters + remove truncation text

[skeshive]

TLDR

• The extension now writes a single file for port discovery (keyed by ppid-port so its guaranteed to be unique when multiple * VS code windows are open with the same ppid.
• The cursor character is now reported as 1-based instead of 0-based for better consistency.
• The ... [TRUNCATED] suffix on oversized selected text has been removed to since the CLI adds this now.
• The ide/diffClosed notification has been renamed to ide/diffRejected to more accurately reflect the user's action of rejecting a proposed change.
• Closing the diff manually no longer sends a notification back to the CLI

Linked Issues

Fixes #4800, #6848

[gemini-code-assist]

Summary of Changes

Hello @skeshive, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request refactors several aspects of the IDE companion extension to enhance robustness, consistency, and communication with the CLI. Key changes include improving the port discovery mechanism to prevent conflicts, standardizing cursor position reporting, and refining how diff-related events are handled and communicated, particularly by removing redundant truncation text and unnecessary notifications.

Highlights

• Unique Port File Naming: The IDE extension now writes a single port discovery file, uniquely identified by a combination of the process ID (ppid) and the port, ensuring uniqueness even with multiple VS Code windows open.
• 1-Based Cursor Indexing: Cursor character positions are now reported using 1-based indexing instead of 0-based, aligning with common editor conventions and improving consistency.
• Removed Truncation Suffix: The ... [TRUNCATED] suffix, previously appended to oversized selected text, has been removed from the extension's output, as this truncation indication is now handled by the CLI.
• Diff Notification Refinement: The notification schema for diff rejections has been updated from IdeDiffClosedNotificationSchema to IdeDiffRejectedNotificationSchema to more accurately reflect the user's action of rejecting a proposed change.
• Manual Diff Close Notification Removal: Manually closing a diff view in the IDE no longer sends a notification back to the CLI, streamlining the communication flow.

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[gemini-code-assist]

Code Review

This pull request introduces several refactorings and improvements to the VS Code extension. It updates the port file naming to be more robust, switches character indexing to be 1-based for consistency, and refines how oversized text selections are handled. Additionally, it renames the ide/diffClosed notification to ide/diffRejected for better clarity. The changes are well-implemented, but I've found one critical issue where the method name for the renamed notification was not updated in one place, which could break communication with the CLI.

[github-actions]

Size Change: -1.49 kB (-0.01%)

Total Size: 21.6 MB

Filename	Size	Change
./bundle/gemini.js	21.6 MB	-1.49 kB (-0.01%)

ℹ️ View Unchanged

Filename	Size
./bundle/sandbox-macos-permissive-closed.sb	1.03 kB
./bundle/sandbox-macos-permissive-open.sb	890 B
./bundle/sandbox-macos-permissive-proxied.sb	1.31 kB
./bundle/sandbox-macos-restrictive-closed.sb	3.29 kB
./bundle/sandbox-macos-restrictive-open.sb	3.36 kB
./bundle/sandbox-macos-restrictive-proxied.sb	3.56 kB

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