v0.0.30: markdown rendering in web, fix scrolling

Web:
- Markdown renderer: **bold**, *italic*, `code`, ```code blocks```,
  # headers, [links](url), > blockquotes, - lists
- All message text rendered as markdown (bot messages look great now)
- Fixed scroll: overflow-y: scroll + min-height: 0 on messages container
- CSS for code blocks, pre, headers, blockquotes, lists
- Styled: code=cyan bg, pre=dark bg+border, bold=white, italic=amber

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

warzone/Cargo.lock

@@ -2956,7 +2956,7 @@ dependencies = [
 
 [[package]]
 name = "warzone-client"
-version = "0.0.29"
+version = "0.0.30"
 dependencies = [
  "anyhow",
  "argon2",
@@ -2989,7 +2989,7 @@ dependencies = [
 
 [[package]]
 name = "warzone-mule"
-version = "0.0.29"
+version = "0.0.30"
 dependencies = [
  "anyhow",
  "clap",
@@ -2998,7 +2998,7 @@ dependencies = [
 
 [[package]]
 name = "warzone-protocol"
-version = "0.0.29"
+version = "0.0.30"
 dependencies = [
  "base64",
  "bincode",
@@ -3023,7 +3023,7 @@ dependencies = [
 
 [[package]]
 name = "warzone-server"
-version = "0.0.29"
+version = "0.0.30"
 dependencies = [
  "anyhow",
  "axum",
@@ -3053,7 +3053,7 @@ dependencies = [
 
 [[package]]
 name = "warzone-wasm"
-version = "0.0.29"
+version = "0.0.30"
 dependencies = [
  "base64",
  "bincode",