Enhance session handling and approval logic with updates

[koltyakov]

No description provided.

[Copilot]

Pull request overview

This PR bumps Varro to 0.17.4 and combines several improvements: handling OpenCode's new session.compacted event, syncing pending permissions when entering full‑access mode, watching OpenCode config/auth files to refresh provider state, and adding a managed OpenCodeServer.restart() (with helpers in OpenCodeProcess to stop stray listeners on the port). It also expands shared OpenCode types (Session/Provider/ModelCapabilities/ModelCost/various session.next.* event payloads) and changes the x-opencode-directory header to send the raw path instead of URL-encoded.

Changes:

• Wire up session.compacted handling and syncPendingPermissions after switching to full‑permission mode.
• Add SidebarProvider file watchers for OpenCode config/auth that debounce a providerLimitService cache clear, server restart, and providers/refresh post; introduce OpenCodeServer.restart() with new port/process cleanup helpers in OpenCodeProcess.
• Expand opencode-types.ts / protocol.ts with new fields, event payload shapes, and the session.compacted server event; send x-opencode-directory as a raw (un-encoded) string.

Reviewed changes

Copilot reviewed 15 out of 15 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
package.json	Version bump to 0.17.4.
src/shared/protocol.ts	Adds session.compacted to SERVER_EVENT_NAMES and its event property type; expands several session.next.* event payloads.
src/shared/opencode-types.ts	Adds new optional Session fields, ModelCapabilities/ModelCost, expanded Provider shape, and helper types for tool output / next events.
src/webview/hooks/session/session-event-handlers.ts	Adds a session.compacted handler that clears compacting state and resyncs the session.
src/webview/hooks/session/session-approvals.ts	After auto-approving in 'full' mode, optionally calls syncPendingPermissions; threaded through dependencies.
src/webview/hooks/runtime/open-code-runtime-instance.ts	Passes syncPendingPermissions into SessionApprovalOperations.
src/webview/hooks/session-event-handlers.test.ts	Test for the new session.compacted handler.
src/webview/hooks/session-approvals.test.ts	Asserts syncPendingPermissions is invoked when switching to full mode.
src/extension/sidebar-provider.ts	Adds debounced provider config/auth file watchers that clear cache, restart the server, and post providers/refresh; stores server as a member.
src/extension/sidebar-provider.test-support.ts	Mocks vscode.RelativePattern for tests.
src/extension/server.ts	New restart() method that tears down state, calls stopServerForRestart(), then re-start()s.
src/extension/open-code-process.ts	Exports getOpenCodeConfigPath; adds stopServerForRestart() plus utilities to find/kill OpenCode processes listening on the configured port.
src/extension/commands.ts	varro.server.restart now uses server.restart() and posts providers/refresh.
src/extension/rest-proxy.ts	Sends x-opencode-directory as a raw directory string (no encodeURIComponent).
src/extension/rest-proxy.test.ts	Updated tests to match the raw-header behavior.

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