feat: hash-only stamp, verify, and hash_report MCP tools

Memory ledger for stdio tests; NatsLedger speaks locald subjects.

pyproject.toml

@@ -0,0 +1,32 @@
+[project]
+name = "verae-mcp-timestamping-server"
+version = "0.1.0"
+description = "Verae MCP timestamping server. Hash-only stamps via leaf locald/NATS."
+readme = "README.md"
+requires-python = ">=3.10"
+license = { text = "UNLICENSED" }
+authors = [{ name = "George Lambert", email = "marchon@gmail.com" }]
+dependencies = [
+    "mcp[cli]>=2.0.0",
+    "nats-py>=2.9.0",
+    "pydantic>=2.0.0",
+]
+
+[project.scripts]
+verae-mcp-timestamping-server = "verae_mcp_timestamping_server.server:main"
+
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[tool.hatch.build.targets.wheel]
+packages = ["src/verae_mcp_timestamping_server"]
+
+[tool.pytest.ini_options]
+testpaths = ["tests"]
+
+[dependency-groups]
+dev = [
+    "pytest>=8.4.0",
+    "anyio>=4.0.0",
+]