v0.0.2: add version display, detailed self-test with step-by-step decrypt

- Version shown on chat load (v0.0.2)
- Self-test now does step-by-step: X3DH shared secret comparison,
  then manual ratchet init + decrypt (not via decrypt_wire_message)
- Shows: rng output, shared_match, alice/bob shared secrets, decrypt result
- This isolates whether X3DH or ratchet or AEAD fails

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

warzone/Cargo.lock

@@ -2555,7 +2555,7 @@ dependencies = [
 
 [[package]]
 name = "warzone-client"
-version = "0.1.0"
+version = "0.0.2"
 dependencies = [
  "anyhow",
  "argon2",
@@ -2584,7 +2584,7 @@ dependencies = [
 
 [[package]]
 name = "warzone-mule"
-version = "0.1.0"
+version = "0.0.2"
 dependencies = [
  "anyhow",
  "clap",
@@ -2593,7 +2593,7 @@ dependencies = [
 
 [[package]]
 name = "warzone-protocol"
-version = "0.1.0"
+version = "0.0.2"
 dependencies = [
  "base64",
  "bincode",
@@ -2616,7 +2616,7 @@ dependencies = [
 
 [[package]]
 name = "warzone-server"
-version = "0.1.0"
+version = "0.0.2"
 dependencies = [
  "anyhow",
  "axum",
@@ -2642,7 +2642,7 @@ dependencies = [
 
 [[package]]
 name = "warzone-wasm"
-version = "0.1.0"
+version = "0.0.2"
 dependencies = [
  "base64",
  "bincode",
@@ -2650,6 +2650,7 @@ dependencies = [
  "getrandom 0.2.17",
  "hex",
  "js-sys",
+ "rand",
  "serde",
  "serde_json",
  "uuid",