docs: add NEWSTART.md and NEWSTART.llm.md capturing all governance, process, and blueprint for a clean repo restart

prompts/global/system.llm.md

@@ -52,4 +52,8 @@
 -- Quiet Shell/No Streaming --
 - Never stream file contents/diffs in chat. Avoid `cat`/`sed` outputs.
 - Use silent checks (exit codes, `grep -q`); log details in DevLog files.
- - Quiet is mandatory (no toggle); default to minimal, non-chat output.
+- Quiet is mandatory (no toggle); default to minimal, non-chat output.
+
+-- Tool Logging --
+- On success: no chat output; optional one-line summary to `docs/devlog/tool.log`.
+- On failure (not sandbox): capture stdout/stderr and append to `docs/devlog/tool.log` with timestamp and command.