chore: remove dead code (59 unused files + ~125 unused exports) (#1835)

* chore: remove dead/unreferenced files across ui, vscode

Remove 59 unused source files (components, hooks, lib utils, stores,
barrels, and orphaned vscode github modules) that are not imported by
any entry-reachable code. Also drop a stale test mock for the removed
execCommands module.

Co-authored-by: Serhii Dziupin <makeittech@users.noreply.github.com>

* refactor: remove unused exported symbols (types, functions, consts, hooks)

Remove exported symbols whose identifier is referenced nowhere in the
repository (verified via repo-wide search), across ui types/contracts,
lib utilities, sync layer, stores, and components. Also drop the few
imports/private helpers orphaned by these removals.

Co-authored-by: Serhii Dziupin <makeittech@users.noreply.github.com>

* refactor: remove more unused exports (desktop, shortcuts, worktree, vscode)

Continue removing repo-wide unreferenced exported functions, consts and
types across lib/desktop, shortcuts, worktreeSessionCreator, sync, and
vscode gitService, with cascading orphaned helpers/imports cleaned up.

Co-authored-by: Serhii Dziupin <makeittech@users.noreply.github.com>

* chore: add dead-code cleanup tooling

* refactor: checkpoint dead-code cleanup

* refactor: remove dead-code suppressions

---------

Co-authored-by: Serhii Dziupin <makeittech@users.noreply.github.com>
Co-authored-by: Bohdan Triapitsyn <artmore@protonmail.com>

packages/ui/src/lib/opencode/client.ts

@@ -7,7 +7,6 @@ import type {
   Part,
   Provider,
   Config,
-  Model,
   Agent,
   TextPartInput,
   FilePartInput,
@@ -170,7 +169,7 @@ interface App {
   [key: string]: unknown;
 }
 
-export type FilesystemEntry = {
+type FilesystemEntry = {
   name: string;
   path: string;
   isDirectory: boolean;
@@ -203,7 +202,7 @@ type FileInputLite = {
   url: string;
 };
 
-export type DirectorySwitchResult = {
+type DirectorySwitchResult = {
   success: boolean;
   restarted: boolean;
   path: string;
@@ -1830,5 +1829,3 @@ class OpencodeService {
 export const opencodeClient = new OpencodeService();
 
 // Exported types
-export type { Session, Message, Part, Provider, Config, Model };
-export type { App };

packages/ui/src/lib/opencode/provider-tracker.ts

@@ -90,7 +90,7 @@ function isCircuitBreakerStatus(status?: number): boolean {
   return status !== undefined && RETRYABLE_STATUS_CODES.has(status)
 }
 
-export function isCircuitOpen(providerID: string): boolean {
+function isCircuitOpen(providerID: string): boolean {
   const state = providers.get(providerID)
   if (!state?.circuitOpen) return false
 
@@ -124,11 +124,3 @@ export function getRetryDelayMs(attempt: number): number {
   const delay = DEFAULT_RETRY_BASE_DELAY_MS * 2 ** attempt
   return Math.min(delay, DEFAULT_RETRY_MAX_DELAY_MS)
 }
-
-export function resetCircuit(providerID: string): void {
-  const state = providers.get(providerID)
-  if (!state) return
-  state.consecutiveErrors = 0
-  state.circuitOpen = false
-  state.circuitCooldownMs = DEFAULT_CIRCUIT_COOLDOWN_MS
-}