hanzo-mcp 0.15.6: drop unscoped console scripts that polluted ~/.local/bin

Removes three console scripts that should never have been declared at the
top-level shell namespace from hanzo-mcp:

  hanzo-dev      — name-collided with the canonical Rust Codex-fork CLI
                   at /opt/homebrew/bin/hanzo-dev (~/work/hanzo/dev).
  hanzo-plugin   — unscoped; if needed, belongs in its own package.
  hanzo-unified  — vague + unscoped.

Modules remain importable (hanzo_mcp.dev_tools, .cli_plugin,
.unified_backend) so any user-facing entry point can ship from its own
package later. Only hanzo-mcp + hanzo-mcp-dev stay as scripts here.

Also bumps the hanzo-tools-browser floor to >=0.5.5 so the CdpTool alias
(mcp__hanzo__cdp) is guaranteed alongside mcp__hanzo__browser on every
hanzo-mcp install.

pkg/hanzo-mcp/pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "hanzo-mcp"
-version = "0.15.5"
+version = "0.15.6"
 description = "The Zen of Hanzo MCP: One server to rule them all. The ultimate MCP that orchestrates all others."
 readme = "README.md"
 requires-python = ">=3.12"
@@ -32,7 +32,7 @@ dependencies = [
     "hanzo-tools>=0.3.0",
     "hanzo-tools-fs>=0.1.0",
     "hanzo-tools-shell>=0.6.1",
-    "hanzo-tools-browser[playwright]>=0.5.4",  # mDNS-only ZAP discovery, OS-assigned ports + uniqued server_id
+    "hanzo-tools-browser[playwright]>=0.5.5",  # CdpTool alias + mDNS-only ZAP discovery
     "hanzo-tools-memory>=0.2.0",
     "hanzo-tools-todo>=0.1.0",
     "hanzo-tools-reasoning>=0.1.0",
@@ -129,9 +129,6 @@ publish = ["twine>=4.0.2", "build>=1.0.3"]
 [project.scripts]
 hanzo-mcp = "hanzo_mcp.cli:main"
 hanzo-mcp-dev = "hanzo_mcp.dev_server:run_dev_server"
-hanzo-plugin = "hanzo_mcp.cli_plugin:main"
-hanzo-dev = "hanzo_mcp.dev_tools:main"
-hanzo-unified = "hanzo_mcp.unified_backend:main"
 
 [tool.setuptools.packages.find]
 where = ["."]