fix(desktop): align local development identity

[Hona]

Summary

• use the existing local channel throughout desktop development
• share one 2.0.0-local timestamp version between Electron and the local CLI
• discover the isolated server through service-local.json
• show LOCAL in the titlebar and the local version in Settings

Verification

• built the Electron main, preload, and renderer bundles with a fixed local identity
• confirmed the renderer bundle contains the local version and LOCAL badge
• built the CLI with channel local and the same version
• confirmed the server writes service-local.json with that version

Type checking

Package type checks remain blocked by existing upstream Core, AI, and Plugin workspace errors. No reported error points to these changed files.

[Copilot]

Pull request overview

This PR standardizes the “local” development identity for the Desktop app by propagating a single 2.0.0-local-<timestamp> version across the Electron main/renderer and the locally built CLI, and by aligning discovery to the service-local.json registration contract.

Changes:

• Introduces a shared local dev OPENCODE_VERSION and threads it into renderer Sentry release + platform version reporting, and into Electron main-side logging/WSL server metadata.
• Adds a local channel option and routes isolated Desktop server discovery through service-local.json when applicable.
• Updates UI channel indicator behavior to show LOCAL alongside DEV/BETA.

Reviewed changes

Copilot reviewed 9 out of 11 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
packages/desktop/src/renderer/index.tsx	Uses a single injected local version for Sentry release tagging and platform version reporting.
packages/desktop/src/main/logging.ts	Records the shared local version in debug log manifests instead of Electron’s app version.
packages/desktop/src/main/index.ts	Uses the shared local version in startup logs and WSL server controller initialization.
packages/desktop/src/main/env.d.ts	Extends ImportMetaEnv typings to include OPENCODE_VERSION.
packages/desktop/src/main/constants.ts	Adds local channel support and introduces a VERSION constant for dev-time version injection.
packages/desktop/src/main/background-cli.ts	Allows isolated Desktop instances to discover a local-channel server via service-local.json.
packages/desktop/scripts/utils.ts	Removes per-build random local versioning and instead forwards the shared OPENCODE_VERSION.
packages/desktop/scripts/dev.ts	Sets OPENCODE_CHANNEL=local and a single timestamped OPENCODE_VERSION for the whole dev session.
packages/desktop/electron.vite.config.ts	Adds renderer-time injection of OPENCODE_VERSION and expands channel parsing to include local.
packages/app/src/env.d.ts	Updates channel typing to include local.
packages/app/src/components/titlebar.tsx	Shows a channel badge for local in addition to dev/beta.

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