feat: restore ACP server implementation from PR #949 (#1254)

Restore the ACP editor-integration implementation that was present on the
original PR branch but did not actually land in main.

Includes:
- acp_adapter/ server, session manager, event bridge, auth, permissions,
  and tool helpers
- hermes acp subcommand and hermes-acp entry point
- hermes-acp curated toolset
- ACP registry manifest, setup guide, and ACP test suite
- jupyter-live-kernel data science skill from the original branch

Also updates the revived ACP code for current main by:
- resolving runtime providers through the modern shared provider router
- binding ACP sessions to per-session cwd task overrides
- tracking duplicate same-name tool calls with FIFO IDs
- restoring terminal approval callbacks after prompts
- normalizing supporting docs/skill metadata

Validated with tests/acp and the full pytest suite (-n0).

pyproject.toml

@@ -55,6 +55,7 @@ pty = [
 honcho = ["honcho-ai>=2.0.1"]
 mcp = ["mcp>=1.2.0"]
 homeassistant = ["aiohttp>=3.9.0"]
+acp = ["agent-client-protocol>=0.8.1,<1.0"]
 rl = [
   "atroposlib @ git+https://github.com/NousResearch/atropos.git",
   "tinker @ git+https://github.com/thinking-machines-lab/tinker.git",
@@ -76,17 +77,19 @@ all = [
   "hermes-agent[honcho]",
   "hermes-agent[mcp]",
   "hermes-agent[homeassistant]",
+  "hermes-agent[acp]",
 ]
 
 [project.scripts]
 hermes = "hermes_cli.main:main"
 hermes-agent = "run_agent:main"
+hermes-acp = "acp_adapter.entry:main"
 
 [tool.setuptools]
 py-modules = ["run_agent", "model_tools", "toolsets", "batch_runner", "trajectory_compressor", "toolset_distributions", "cli", "hermes_constants", "hermes_state", "hermes_time", "mini_swe_runner", "rl_cli", "utils"]
 
 [tool.setuptools.packages.find]
-include = ["agent", "tools", "tools.*", "hermes_cli", "gateway", "gateway.*", "cron", "honcho_integration"]
+include = ["agent", "tools", "tools.*", "hermes_cli", "gateway", "gateway.*", "cron", "honcho_integration", "acp_adapter"]
 
 [tool.pytest.ini_options]
 testpaths = ["tests"]