P3 review: the surface, docs and proofs

Split kernel::entry_flows into entry_movements and flows_of so the
reversal-mirror proof fits CI; prove runs the fast harnesses, prove-slow
the 8 slow ones (own job in scheduled CI), prove-all both. Laws in
verification.md renumbered 1-31 with a table of all 55 harnesses.

MCP docs checked against the 115 tools (about 60 fixes) with a test that
every tool is documented; rules.md cross-references fixed; bookspec
statuses and loader tightened; viewer notes wrap and accounts sort by
code; STATUS.md says P3 is built, cutover pending.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01T3gXMVt7XJPi6ens1or9Dj

crates/ledger-mcp/tests/spec_assets.rs

@@ -1303,7 +1303,7 @@ fn acquired_date_comes_from_the_acquisition_entry() {
     );
 }
 
-// ------------------------------- posted and scheduled (rules.md B-24)
+// ------------------------------- posted and scheduled (rules.md B-15 rule 8)
 
 /// Named regression 1 (the brief's reproduction 1, its figures made up): a
 /// $1,440.00 laptop, 36 months, in service 2026-05-15, nothing run. As of