Keep streaming insertion enabled for migrated prefs

[H-Chris233]

User description

Summary

• keep streaming insertion default-on for old preferences that persisted the previous default false
• add one-time migration marker and persist normalized prefs on load
• add release-note warning for default-on streaming insertion and clipboard sync

Tests

• cargo test --manifest-path src-tauri/Cargo.toml --lib streaming_insert -- --nocapture
• cargo test --manifest-path src-tauri/Cargo.toml --lib legacy_streaming_insert_false_is_migrated_and_marker_is_persisted -- --nocapture
• npm run build
• cargo test --manifest-path openless-all/app/src-tauri/Cargo.toml --lib
• git diff --check

Closes #440

---

PR Type

Enhancement, Bug fix, Documentation, Tests

---

Description

• Default streaming input after updates

• Migrate legacy prefs with marker

• Preserve manual opt-outs after migration

• Add release-note behavior warning

---

Diagram Walkthrough

flowchart LR
  A["preferences.json on disk"] --> B["read_preferences"]
  B --> C["Deserialize UserPreferences"]
  C --> D["Legacy streamingInsert:false?"]
  D -- "yes" --> E["Set streaming_insert true"]
  D -- "yes" --> F["Persist migration marker"]
  D -- "no" --> G["Keep stored values"]
  E --> H["App loads preferences"]
  F --> H
  G --> H

Loading

File Walkthrough

	Relevant files
Bug fix	persistence.rs Migrate legacy streaming prefs on load                                      openless-all/app/src-tauri/src/persistence.rs Adds read_preferences to migrate legacy preference files. Persists normalized prefs when migration marker is missing. Logs success or failure for marker persistence. Adds a regression test for legacy streamingInsert:false. +80/-3
Enhancement	types.rs Add streaming migration marker to preferences                        openless-all/app/src-tauri/src/types.rs Introduces streaming_insert_default_migrated on UserPreferences. Defaults missing or legacy streamingInsert to enabled. Preserves explicit post-migration false values. Updates serde wiring and adds unit tests. +61/-2    ipc.ts Sync mocked preferences shape with backend                              openless-all/app/src/lib/ipc.ts Adds streamingInsertDefaultMigrated to mock settings. Keeps frontend test and IPC data aligned with backend schema. +1/-0      types.ts Document streaming default-on preference                                  openless-all/app/src/lib/types.ts Adds streamingInsertDefaultMigrated to the TS interface. Updates the streamingInsert docs to default-on behavior. Mirrors backend preference schema changes for the UI. +4/-1
Tests	stylePrefs.test.ts Update style preference test fixture                                          openless-all/app/src/lib/stylePrefs.test.ts Adds the new migration marker to test preferences. Keeps the fixture compatible with updated UserPreferences. +1/-0
Documentation	release-tauri.yml Add release notes for default-on streaming                              .github/workflows/release-tauri.yml Appends release-note text about streaming input defaulting on. Notes clipboard sync behavior as part of the change. Warns users about the new default behavior in releases. +5/-0

---

[github-actions]

PR Reviewer Guide 🔍

Here are some key observations to aid the review process:

🎫 Ticket compliance analysis 🔶 440 - Partially compliant Compliant requirements: 更新后默认开启 streaming_insert 区分旧配置默认值与手动关闭，并持久化迁移标记 在 release notes 中增加行为变更提示 Non-compliant requirements: 暂未能仅凭代码确认“流式输出”对应的具体配置项是否就是 streaming_insert_save_clipboard Requires further human verification: 需要人工确认“流式输出”的产品映射是否与 streaming_insert_save_clipboard 完全一致

⏱️ Estimated effort to review: 3 🔵🔵🔵⚪⚪

🧪 PR contains tests

🔒 No security concerns identified

⚡ No major issues detected