android(net): rewrite Api.kt KDoc to avoid embedded '*/' close-comment marker

The Wave-3 scaffold's docstring contained a literal '`*/public`'
inside a /** … */ KDoc block. Kotlin's KDoc parser does not escape
'*/'; it terminates the comment at the first occurrence, so 'public'
became a code token and kotlinc fired 'Syntax error: Expecting a
top level declaration' for every subsequent byte of the file. First
caught by android.yml run 26395264293.

Rewrote the line to read '`/public` sub-path' with an inline note
explaining the workaround. Same intent, parser-safe.

Author: pulkitpareek18

android/app/src/main/java/dev/zeroauth/android/net/Api.kt

@@ -22,8 +22,9 @@ import java.util.concurrent.TimeUnit
  * stretch: it returns the human-readable "Sign in to Chrome on a
  * MacBook Pro" label IF the backend has populated it.
  *
- * Why a separate `*/public` path (NOT documented in api_contract.md as
- * of 2026-05-22):
+ * Why a separate `/public` sub-path (NOT documented in api_contract.md
+ * as of 2026-05-22 — the literal `* /public` would close this KDoc
+ * block, so the path is written without the leading asterisk):
  *
  *   - The phone holds NO tenant API key. ADR-0009 § "Phone is
  *     air-gapped from the backend" explicitly says the phone never