update crate metadata + add deploy.sh release script

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

Cargo.toml

@@ -3,10 +3,10 @@ name = "numa"
 version = "0.5.0"
 authors = ["razvandimescu <razvan@dimescu.com>"]
 edition = "2021"
-description = "Ephemeral DNS overrides for development and testing. Point any hostname to any endpoint. Auto-revert when you're done."
+description = "Portable DNS resolver in Rust — .numa local domains, ad blocking, developer overrides, DNS-over-HTTPS"
 license = "MIT"
 repository = "https://github.com/razvandimescu/numa"
-keywords = ["dns", "proxy", "override", "development", "networking"]
+keywords = ["dns", "dns-server", "ad-blocking", "reverse-proxy", "developer-tools"]
 categories = ["network-programming", "development-tools"]
 
 [dependencies]

deploy.sh

@@ -0,0 +1,60 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+VERSION="${1:-}"
+
+if [ -z "$VERSION" ]; then
+    echo "Usage: ./deploy.sh v0.5.1"
+    exit 1
+fi
+
+# Strip leading 'v' for Cargo.toml (accepts both "v0.5.1" and "0.5.1")
+SEMVER="${VERSION#v}"
+TAG="v${SEMVER}"
+
+# Validate semver format
+if ! [[ "$SEMVER" =~ ^[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
+    echo "Error: '$SEMVER' is not a valid semver (expected: X.Y.Z)"
+    exit 1
+fi
+
+# Check we're on main
+BRANCH=$(git branch --show-current)
+if [ "$BRANCH" != "main" ]; then
+    echo "Error: must be on main branch (currently on '$BRANCH')"
+    exit 1
+fi
+
+# Check working tree is clean
+if [ -n "$(git status --porcelain -- ':!deploy.sh' ':!Cargo.toml' ':!Cargo.lock')" ]; then
+    echo "Error: working tree has uncommitted changes"
+    git status --short
+    exit 1
+fi
+
+# Check tag doesn't already exist
+if git rev-parse "$TAG" >/dev/null 2>&1; then
+    echo "Error: tag '$TAG' already exists"
+    exit 1
+fi
+
+CURRENT=$(grep '^version = ' Cargo.toml | head -1 | sed 's/version = "\(.*\)"/\1/')
+echo "Bumping $CURRENT → $SEMVER"
+
+# Update Cargo.toml version
+sed -i '' "s/^version = \"$CURRENT\"/version = \"$SEMVER\"/" Cargo.toml
+
+# Update Cargo.lock
+cargo check --quiet 2>/dev/null
+
+# Commit, tag, push
+git add Cargo.toml Cargo.lock
+git commit -m "bump version to $SEMVER"
+git tag "$TAG"
+git push
+git push origin "$TAG"
+
+echo ""
+echo "✓ Tagged $TAG and pushed"
+echo "  → GitHub Actions: release binaries + crates.io publish"
+echo "  → Watch: gh run list --limit 1"