Add question-reframing guidance to CLAUDE.md; commit accumulated project files

- CLAUDE.md: add "Question the question" and "One clarifying question" rules
  to Tone and Interaction — XY problem detection, false premise checks, and
  explicit reframe pattern before answering
- Add claude/ detail-file directory (topic docs referenced from CLAUDE.md)
- Add ABOUT.md, FUTURE.md
- Update memory/, scripts/, settings.yaml with accumulated session changes

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

claude/script-skill-documentation.md

@@ -0,0 +1,12 @@
+# Script & Skill Documentation
+
+Every script in `claude-foundations` and every skill in `custom-claude-skills` must have a corresponding memory file in `claude-foundations/memory/`:
+
+- **Scripts:** `memory/script-<name>.md` — purpose, usage, how it works, gotchas
+- **Skills:** `memory/skill-<name>.md` — purpose, usage, how it works, gotchas, which projects use it
+
+Each memory file should be self-contained and referenced from `claude-foundations/MEMORY.md` (the index). Future sessions can then understand what tooling exists without reading every script and SKILL.md from scratch.
+
+**When creating a new script or skill:** create the memory file and update the MEMORY.md index as part of the same commit.
+
+**When creating or editing a skill:** run `validate-skill <path/to/SKILL.md>` before committing. The validator catches known restriction violations that have repeatedly broken skills — `$VAR` in paths, `${VAR}` syntax, `$()` substitution, uncovered binaries in `allowed-tools`, and more. A skill must pass with zero errors before it is committed. Warnings should be reviewed but are acceptable.