fix(chat): retain terminal report context with concise default replies

[Lucas1479]

Problem and change

A completed research report could appear in full on its Slice card while Kurisu only received a short narration. WorkNote/narrator input budgets discarded the report body, and subsequent Main Chat frames projected status without the persisted result. Questions about details late in a report therefore could not be answered from the already completed Work.

• Preserve complete terminal report input through WorkNote, merged narration and the existing terminal-language repair. Keep progress and spoken-output budgets.
• Read the latest terminal Attempt result from the Work accepted at the receiving session/context into current_work.result. Retain provider attribution and Host completion state; do not expose predecessor results during a newer active or orphaned Attempt. Reuse the existing ledger after restart.
• Add the requested flexible six-sentence rule to the built-in Japanese Kurisu persona: normally at most six sentences, with exceptions for requested detail or an accurate, sufficient answer. The optional full-persona override stays empty by default and still takes precedence.
• Document the behavior in both READMEs. No database migration, new setting, new summarization pass, or dependency change.

Validation

• Relevant regression suites on the combined feat(tts): auto-select NVIDIA acceleration with manual overrides #177/fix(chat): retain terminal report context with concise default replies #178 head 0f51b41: 223 passed. Command: python -X utf8 -m pytest -q tests/test_work_terminal_report_context.py tests/test_main_chat_character_prompt.py tests/test_character_prompt_snapshots.py tests/test_character_prompt_module.py tests/test_cooperative_work_provider_facts.py tests/test_cooperative_experience.py tests/test_cooperative_shared_history.py tests/test_session_character_scope.py tests/test_work_narration_priority.py tests/test_work_narration_governor.py tests/test_work_narration_privacy.py tests/test_work_observer_role_sanitization.py tests/test_cooperative_context_recovery.py.
• python -m ruff check . and both architecture/README view checks passed.
• All 14 GitHub CI checks passed on 0f51b41377f46585047db25578bcac6696aab9b1, including all three isolated Python-suite shards, Electron build, Windows desktop smoke, and platform/profile checks. Maintainer manual acceptance passed on 2026-10-11 (Pacific/Auckland). The superseded partial local full-suite run is not counted as a full pass.
• npm --prefix electron run build passed in the maintainer local checkout after synchronizing its pre-existing local voice-catalog customization into its generated catalog. Those local customization files are excluded from this PR.
• Live DeepSeek main-model comparison using a synthetic 4.5 KB report, production persona/frame and transport: without the report it explicitly lacked the details; with the report it returned the late 722/372 counts and Lean caveat with action: null. No UI/audio run or real-news truth validation is claimed.
• Regression coverage includes concise speech, terminal repair, bounded progress, error/cancelled results, session/context isolation, latest-attempt replacement, archive handling, restart recovery, and the standalone Provider Slice/narration path.

Related to #176. #177 passed all 16 checks and has since merged; this branch includes the main update. PR only, per maintainer request.

中文说明

终态研究报告在 Slice 卡片中是完整的，但红莉栖此前只收到简短播报；后续主对话也没有读取台账中的报告正文，所以无法回答报告后半段的细节。

本次保留终态报告输入全文，并让当前会话所接收的 Work 将最新终态结果提供给后续对话；过程播报和语音输出仍保持简短。继续沿用 Provider 来源、Host 完成度及会话绑定，重启后可从现有台账读取，不新增持久化结构。

同时将“通常最多 6 句；要求详细或准确充分回答确有需要时可超过”的规则加入内置红莉栖日语人格。人格覆盖字段默认仍留空，已有自定义覆盖继续优先。

包含 #177 的最新提交已通过 223 项相关回归和静态检查；实际主模型的合成报告对照已通过。本地主线及 Electron 构建已更新，供维护者实机验收。最新提交的 14 项 CI 已全部通过，包括三组全量 Python 测试、Electron 构建和 Windows 桌面冒烟。维护者于 2026-10-11（Pacific/Auckland）确认实机验收通过。合成报告验证不代表对真实新闻的事实核验。