Second pass with the avoid-ai-writing detector

The skill's detector scored the README, PARITY.md and the extracted
comment prose. Fixed what it flagged: hollow intensifiers, "in order
to", "additionally", "the whole point", bold sentences in docs, and
bold that had wrapped across comment lines. Comment prose scores a
maximum of 4 out of 100 across the repo.

One sweep rule mangled four comments ("which is the entire point of X"
lost its clause); repaired, and the rule now keeps the clause.

Comments and strings only. 1208 tests pass, counted from the XML.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

engine/src/test/kotlin/io/flamenet/e2e/VaultTest.kt

@@ -119,8 +119,8 @@ class VaultTest {
     }
 
     /**
-     * **A failed decrypt damages the session object it was handed, so the
-     * thing that gets retired must be re-read from the vault.**
+     * A failed decrypt damages the session object it was handed, so the
+     * thing that gets retired must be re-read from the vault.
      *
      * This is the bug the first version of the retirement fix shipped with, and
      * the reason `a retired session is kept and still opens its chain` did not