feat(hooks+skills): destructive-bash confirm + architecture suite + problem-solving routing

Three improvements bundled together:

1. New hook — `destructive-bash-confirm.py` (PreToolUse/Bash):
   Gates `git push --force`, `git reset --hard`, `git clean -f`,
   `git branch -D`, and `rm -rf` behind a confirmation modal with the
   command, local context (branch, uncommitted counts, targeted paths),
   and a severity banner. Elevates severity when force-pushing protected
   branches (main/master/develop/release/prod) or when rm -rf targets
   root, home, or wildcard paths. Reuses _common.py.

2. Architecture suite rename — the "Part of the arch-* suite" footer in
   arch-design, arch-decide, arch-document, arch-evaluate descriptions
   now reads "Part of the architecture suite (arch-design / arch-decide
   / arch-document / arch-evaluate + c4-analyze / c4-diagram for
   notation-specific diagramming)." Matching footers added to c4-analyze
   and c4-diagram. c4-* keep their framework-specific prefix (C4 is a
   notation, arch-* is framework-agnostic workflow) but are now
   discoverable as suite members.

3. Problem-solving cluster routing — added YAML frontmatter with
   descriptions (including "Do NOT use for X (use Y)" clauses) to
   debug/SKILL.md and fix-issue/SKILL.md. Previously both had no
   frontmatter at all, which broke skill-router discovery. The four
   cluster members (debug, fix-issue, root-cause-trace, five-whys) now
   route unambiguously by description alone.

1 files changed, 1 insertions, 1 deletions

diff --git a/c4-analyze/SKILL.md b/c4-analyze/SKILL.md
index 0817ca7..ab8986b 100644
--- a/c4-analyze/SKILL.md
+++ b/c4-analyze/SKILL.md
@@ -1,6 +1,6 @@
 ---
 name: c4-analyze
-description: Analyze a codebase or git repo and generate C4 architecture diagrams (System Context, Container, Component). Use when the user wants to visualize or document the architecture of an existing project.
+description: Analyze a codebase or git repo and generate C4 architecture diagrams (System Context, Container, Component). Use when the user wants to visualize or document the architecture of an existing project. Dispatched by arch-document for building-block and container views; usable standalone for quick architecture visualization. Part of the architecture suite (arch-design / arch-decide / arch-document / arch-evaluate + c4-analyze / c4-diagram for notation-specific diagramming).
 argument-hint: "[path-or-container-name]"
 ---