chore: scrub internal session-log narrative from code comments

Wide sweep across the codebase to remove leftover artifacts of internal
development sessions, internal entity naming, and audit-code references
that point at non-public docs. The technical reasoning for each piece
of code stays; the "Caught 2026-05-XX while debugging XYZ at preprod"
narrative goes.

Categories scrubbed:
- Dated session-log comments ("Caught/Surfaced/Discovered 2026-05-XX")
  → rewritten as neutral technical reasoning.
- Internal audit codes (AUDIT-H2, AUDIT-C2, AUDIT-M2, AUDIT-H5, etc.)
  referencing a non-public audit doc → labels stripped, fix reasoning
  kept.
- Internal-entity names in code comments (Sulkta-specific, Sulkta runs
  X, Terrapin/TRP as gov-token names) → generic phrasing.
- Test fixture helper `sulkta_cfg` → `test_dao_cfg`; test DAO name
  string `"sulkta"` → `"test-dao"`. On-chain addresses in test fixtures
  kept (they're real-world wire-byte test data on public chain).
- Cross-references to memory files / non-public audit docs
  (`internal notes`, `aiken-escrow/README.md`)
  → reasoning inlined or removed.
- Test names renamed: `decodes_sulkta_live_governor_datum` →
  `decodes_live_governor_datum`, `decodes_sulkta_live_proposal_zero` →
  `decodes_live_finished_proposal`, etc.

Kept (legitimate):
- Cross-references to in-repo audit docs (aiken-escrow/README.md, aiken-escrow/README.md) — they ARE the
  public artifacts being referenced.
- HIGH-1/HIGH-2/MED-2/LOW labels on escrow fixes — these correspond to
  findings in the in-repo audit doc.
- TODO markers — legitimate work-still-to-do.

aiken-escrow/validators/escrow.ak

@@ -1,13 +1,12 @@
-// ⚠️  WIP — UNAUDITED. EXPERIMENTAL. DO NOT USE WITH MAINNET FUNDS.
+// ⚠️  UNAUDITED. EXPERIMENTAL. Use-at-own-risk for high-value flows.
 //
 // Aldabra escrow validator — v1 (Plutus V3 / Aiken v1.1.x)
 //
-// Status: feature-flagged behind `--features escrow_wip` in the off-chain
-// crates. Tested only on preprod_test2 by Sulkta-Coop. No third-party audit
-// has been performed. Do NOT deploy to mainnet, do NOT route real value
-// through this script until external review is complete.
+// No third-party audit has been performed. Internal review only —
+// see aiken-escrow/README.md for findings.
 //
-// Two-party agreement-with-veto escrow. Spec: aiken-escrow/README.md
+// Two-party agreement-with-veto escrow. See aiken-escrow/README.md
+// for the state-machine summary.
 //
 // State machine:
 //   Open ─(both sign Agree)─▶ Agreed{at} ─(lock elapsed, no veto)─▶ Settle (→ recipient)
@@ -431,7 +430,7 @@ validator escrow {
 // ----- tests -----
 
 test minimal_smoke() {
-  // Smoke test: type-checks. Real e2e tests run on preprod_test2 from
-  // aldabra-escrow's MCP integration tests.
+  // Smoke test: type-checks. End-to-end behavior is exercised by the
+  // off-chain builder integration tests in `crates/aldabra-dao`.
   True
 }