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-core/src/ledger.rs

@@ -2534,7 +2534,7 @@ impl Ledger {
     /// ```text
     /// GOAL: a run the books record is the entry that posted it, no more
     ///       and no less, so accumulated_posted is what the books carry.
-    /// SOURCE: rules.md B-24; B-28 (new commands are bounded; replay checks
+    /// SOURCE: rules.md B-15 rules 6 and 8, B-24; B-28 (new commands are bounded; replay checks
     ///         only what every journaled run passed:
     ///         record_depreciation_run).
     /// ```