Enhance workflow commands and context management

- Updated `plan.md` to include new fields in context-package.json: prioritized_context, user_intent, priority_tiers, dependency_order, and sorting_rationale.
- Added validation for the existence of the prioritized_context field in context-package.json.
- Modified user decision flow in task generation to present action choices after planning completion.
- Improved context-gathering process in `context-gather.md` to integrate user intent and prioritize context based on user goals.
- Revised conflict-resolution documentation to require planning notes records after conflict analysis.
- Streamlined task generation in `task-generate-agent.md` to utilize pre-sorted context without redundant sorting.
- Removed unused settings persistence functions and corresponding tests from `claude-cli-tools.ts` and `settings-persistence.test.ts`.

ccw/src/tools/claude-cli-tools.ts

@@ -733,66 +733,6 @@ export function getPromptFormat(projectDir: string): 'plain' | 'yaml' | 'json' {
   }
 }
 
-/**
- * Update default model setting
- * @param projectDir - Project directory path
- * @param model - Default model name
- * @returns Updated settings config
- */
-export function setDefaultModel(
-  projectDir: string,
-  model: string
-): ClaudeCliSettingsConfig {
-  const settings = loadClaudeCliSettings(projectDir);
-  settings.defaultModel = model;
-  saveClaudeCliSettings(projectDir, settings);
-  return settings;
-}
-
-/**
- * Get default model setting
- * @param projectDir - Project directory path
- * @returns Current default model or undefined if not set
- */
-export function getDefaultModel(projectDir: string): string | undefined {
-  try {
-    const settings = loadClaudeCliSettings(projectDir);
-    return settings.defaultModel;
-  } catch {
-    return undefined;
-  }
-}
-
-/**
- * Update auto-sync enabled setting
- * @param projectDir - Project directory path
- * @param enabled - Whether auto-sync is enabled
- * @returns Updated settings config
- */
-export function setAutoSyncEnabled(
-  projectDir: string,
-  enabled: boolean
-): ClaudeCliSettingsConfig {
-  const settings = loadClaudeCliSettings(projectDir);
-  settings.autoSyncEnabled = enabled;
-  saveClaudeCliSettings(projectDir, settings);
-  return settings;
-}
-
-/**
- * Get auto-sync enabled setting
- * @param projectDir - Project directory path
- * @returns Current auto-sync status or undefined if not set
- */
-export function getAutoSyncEnabled(projectDir: string): boolean | undefined {
-  try {
-    const settings = loadClaudeCliSettings(projectDir);
-    return settings.autoSyncEnabled;
-  } catch {
-    return undefined;
-  }
-}
-
 /**
  * Update smart context enabled setting
  * @param projectDir - Project directory path