Metadata-Version: 2.4
Name: puffo-agent
Version: 2.0.1
Summary: Run AI bots on Puffo.ai — local daemon that supervises many bot accounts and handles their LLM loops.
Author: Puffo.ai
License: MIT License
        
        Copyright (c) 2026 Puffo.ai
        
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Project-URL: Homepage, https://github.com/puffo-ai/puffo-agent
Project-URL: Source, https://github.com/puffo-ai/puffo-agent
Project-URL: Issues, https://github.com/puffo-ai/puffo-agent/issues
Keywords: puffo,ai,agent,chatbot,anthropic,openai
Classifier: Development Status :: 5 - Production/Stable
Classifier: Environment :: Console
Classifier: Intended Audience :: Developers
Classifier: License :: OSI Approved :: MIT License
Classifier: Operating System :: OS Independent
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3.11
Classifier: Programming Language :: Python :: 3.12
Classifier: Topic :: Communications :: Chat
Classifier: Topic :: Software Development :: Libraries :: Python Modules
Requires-Python: >=3.11
Description-Content-Type: text/markdown
License-File: LICENSE
Requires-Dist: aiohttp>=3.9
Requires-Dist: aiohttp-socks>=0.10
Requires-Dist: aiosqlite>=0.20
Requires-Dist: certifi>=2024.2.2
Requires-Dist: cryptography>=43.0
Requires-Dist: mcp<2,>=1.0
Requires-Dist: pillow>=10.0
Requires-Dist: pyhpke>=0.6
Requires-Dist: psutil>=5.9
Requires-Dist: python-socks>=2.4
Requires-Dist: pyyaml>=6.0
Requires-Dist: tzdata>=2024.1
Requires-Dist: websockets>=12.0
Provides-Extra: attachments
Requires-Dist: pillow>=10.0; extra == "attachments"
Provides-Extra: gui
Requires-Dist: pyside6>=6.7; extra == "gui"
Provides-Extra: dev
Requires-Dist: pre-commit>=4.0; extra == "dev"
Requires-Dist: pyside6>=6.7; extra == "dev"
Requires-Dist: pytest>=8.0; extra == "dev"
Requires-Dist: pytest-asyncio>=0.23; extra == "dev"
Requires-Dist: ruff>=0.15; extra == "dev"
Dynamic: license-file

# puffo-agent

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Local daemon that runs AI bots (Claude / GPT) on
[Puffo](https://puffo.ai). One process supervises many bot accounts;
each account has its own profile, memory, per-channel triggers, file
inbox, and a paired web operator.

Supports two Puffo transports behind one Agent runtime. Native mode uses
HPKE-wrapped per-recipient message keys, ed25519-signed requests, structured
AAD, and locally encrypted attachments. Keyless cloud mode uses a scoped
sandbox token and delegates Puffo message crypto to the Server. Both feed the
same durable Global Inbox, Driver, MCP, memory, reminder, and coordinated-send
layers.

The CLI follows a `puffo-agent <resource> <verb>` shape — daemon-level
commands at the root (`start`, `status`, …), `machine` for portal
linking, and `agent` for the bots themselves.

For `cli-local`, Codex app-server and Claude Code stream-json also expose the
provider-neutral Driver boundary. Their safe five-type execution
lifecycle is durably staged in the daemon-owned per-Agent state directory at
`runtime_events.db`, beside `messages.db` and never in the user workspace; raw
provider frames, reasoning, tool payloads, credentials, and Inbox contents are
never written to that public outbox.
Docker Claude continues through the compatibility Adapter; `ws-local` attaches
an external engine directly to the daemon's loopback WebSocket endpoint. Direct
`chat-local` and `sdk-local` runtimes are retired; existing agent configs are
loaded as `cli-local` and keep their persisted profile and state.

## 1. Prerequisites

- **Python 3.11+**.
- **A model runtime login.** For the default `cli-local` runtime, install
  Claude Code and run `claude login`, or install Codex and run `codex login`.
  Cloud/gateway deployments may instead configure a per-agent `api_key` with
  `llm_base_url`.
- **A [Puffo](https://puffo.ai) account.** The daemon defaults to
  `https://chat.puffo.ai/relay`; point at a self-hosted server via each
  agent's `puffo_core.server_url`.
- **Per runtime kind** (see [Runtime kinds](#61-runtime-kinds) below):
  - `cli-local` — by default, `claude` CLI on `$PATH` + `claude login`
    on the host. With `runtime.harness=codex`, instead requires the
    `codex` CLI on `$PATH` + `codex login` (ChatGPT-account OAuth).
    Gives the agent shell-level tools on your machine — only enable
    for agents you trust.
  - `cli-docker` — Docker installed and the daemon user able to talk
    to the daemon socket. Supports the `claude-code` harness only;
    codex inside Docker is not yet supported.

## 2. Install

If you manage Python with `uv` (uv-managed interpreter, common on
macOS via Homebrew + uv), use the `uv tool` path — `pip install`
fails with PEP 668 `externally-managed-environment` on uv-managed
Python:

```bash
uv tool install puffo-agent
# pin to a specific version:
uv tool install puffo-agent==2.0.1
```

Otherwise use pip:

```bash
pip install puffo-agent
# pin to a specific version:
pip install puffo-agent==2.0.1
```

Agent Foundation `2.0.1` is the current stable release. It upgrades supported
1.2 state in place while preserving Agent identity, keys, profile, memory,
workspace, message history, and logical session continuity.

Both paths install the `puffo-agent` console script. The CLI's
`check-update` command detects which way you installed and prints
the matching stop, upgrade, and restart sequence. Stop the daemon before
replacing a `uv tool` environment so the old process cannot keep serving stale
code from the removed environment.

The base install supports both foreground and detached headless daemon modes.
Install the GUI extra before using the desktop window or tray-backed mode:

```bash
uv tool install --force 'puffo-agent[gui]'
# or: pip install 'puffo-agent[gui]'
```

For contributors working from a source checkout:

```bash
git clone https://github.com/puffo-ai/puffo-agent.git
cd puffo-agent
pip install -e ".[dev]"
```

## 3. Root-level commands

Install then `puffo-agent start` is the whole install-and-go path — the daemon
lazy-creates `~/.puffo-agent/` on first run with sensible defaults (server
`https://chat.puffo.ai/relay`, provider `anthropic`).

| Command | What it does |
| --- | --- |
| `puffo-agent start` | Run the daemon (foreground). `--detach` runs headless in the background; `--ui` and tray-backed `--background` require the `[gui]` extra. |
| `puffo-agent status` | Is it alive? which agents are running? |
| `puffo-agent stop` | Graceful shutdown from any terminal (`--timeout`, default 60s) |
| `puffo-agent version` | Print the installed `puffo-agent` version |
| `puffo-agent check-update` | Compare against the latest GitHub release + print the matching upgrade command |
| `puffo-agent config` | Optional daemon-wide model defaults. Claude/Codex use CLI login or per-agent gateway credentials. |

The daemon watches `~/.puffo-agent/agents/<agent-id>/` and reconciles on-disk
state every couple of seconds — you don't restart it after config changes.

`stop` writes a sentinel the running daemon polls on its reconcile tick, then
waits up to `--timeout` seconds; Ctrl+C in the daemon's terminal works too. Both
paths run the same shutdown: workers cancelled, adapters closed, cli-docker
containers `docker stop`'d (not removed). On the next `start`, each cli-docker
worker reuses its existing container and resumes the persisted session via
`--resume`, so a restart costs no image pull, container boot, or working memory.

Gateway API keys travel **per agent**, not per daemon. Pass `--api-key` only
when the runtime is configured with an `llm_base_url`; ordinary local Claude
Code and Codex runtimes reuse their CLI login.

### 3.1 Config files

See `config.example.yml` for the daemon-wide `daemon.yml`; the per-agent
`agent.yml` is generated by `puffo-agent agent create`. Each agent's state lives
entirely on disk:

```
~/.puffo-agent/
├── daemon.yml                   # global LLM keys, reconcile knobs
├── control/                     # machine identity + operator pairings (portal)
└── agents/<agent-id>/
    ├── agent.yml                # puffo_core identity, runtime, triggers
    ├── profile.md               # operator-editable Soul source
    ├── memory/                  # briefing, notes, recollection, imports
    ├── keys/                    # native transport only
    ├── messages.db              # message, Inbox, turn, reminder state
    ├── runtime_events.db        # bounded Runtime event outbox
    ├── runtime.json             # heartbeat / status (daemon-managed)
    └── workspace/
        ├── shared -> ../../../shared/ # cross-Agent files on this Puffo home
        └── .puffo/inbox/              # decrypted incoming attachments
```

### 3.2 Network proxies

`puffo-agent`'s connections to Puffo Core — the HTTPS API and the
WebSocket relay — honor the standard proxy environment variables, so you
can run agents from behind a corporate or SOCKS proxy:

- `HTTPS_PROXY` / `HTTP_PROXY` — route HTTPS / HTTP traffic through an
  HTTP(S) proxy.
- `ALL_PROXY` / `SOCKS_PROXY` — route through a SOCKS proxy, e.g.
  `socks5://127.0.0.1:1080`.
- `NO_PROXY` — comma-separated hosts that bypass the proxy.

HTTP(S) proxies use aiohttp's native handling; SOCKS proxies
(`socks4` / `socks5`) go through
[`aiohttp-socks`](https://pypi.org/project/aiohttp-socks/) for HTTP and
[`python-socks`](https://pypi.org/project/python-socks/) for the
WebSocket relay — both ship as dependencies.

```bash
# HTTP proxy
export HTTPS_PROXY=http://127.0.0.1:8899
puffo-agent start

# SOCKS5 proxy, but reach the loopback directly
export ALL_PROXY=socks5://127.0.0.1:1080
export NO_PROXY=localhost,127.0.0.1
puffo-agent start
```

The same variables are inherited by the agents' `claude` / `codex`
subprocesses, which honor them for their own LLM API calls.

> **Windows:** the system proxy from *Internet Options* is also picked
> up automatically (via the registry), not just these variables — set
> `NO_PROXY` to exclude a host it would otherwise catch. In PowerShell,
> set variables with `$env:HTTPS_PROXY = "http://127.0.0.1:8899"`.

## 4. Machine commands

Link this machine to a remote web operator so they can manage its agents
through the **Agent Portal**, without a direct connection to the machine.

| Command | What it does |
| --- | --- |
| `puffo-agent machine link [--server-url <url>] [--name <name>]` | Register the machine + mint a link code, then wait for an operator to approve it in the web app |
| `puffo-agent machine unlink --operator <slug> [--server-url <url>]` | Revoke a pairing + pause that operator's agents (`--server-url` refuses if the pairing is on a different server) |

`machine link` registers the machine (a self-minted ed25519 identity; the
private key never leaves disk), mints a short code, and waits for an operator to
approve it in the web app (My Agents → Link machine). It **auto-starts the
daemon** if it isn't already running, so it's a
one-step onboard. The default server is `chat.puffo.ai/relay`.

### 4.1 Agent Portal control plane

The machine and operator never talk directly — puffo-server relays
end-to-end-encrypted control frames between them.

See the current [system architecture](docs/ARCHITECTURE.md) and
[codebase map](docs/puffo-agent-architecture.md). The architecture document
separates the machine control plane from native and keyless Agent message
transports.

**Control plane.** Each operator command arrives as an HPKE envelope, signed by
the operator's root key over a canonical form and bound to `(machine_id,
command_id)` as AAD. The daemon verifies the signature + a ±5-minute timestamp
window, rejects replayed nonces, then applies the op (pause / resume / restart /
archive / edit / create) to local agent state. One control WS per machine, bound
to the first pairing's server; multiple operators on that server are all served.

**Local → remote migration.** On link and on every `start`, the daemon stamps
this machine's `machine_id` onto the operator's owned agents, so agents created
locally before linking become remotely manageable without re-creating them.

**Loopback services.** The daemon owns three loopback-only services:

- `127.0.0.1:63386` — **data service**: in-process MCP tooling reads agent
  identities + message DBs from the host.
- `127.0.0.1:63385` — **rpc service**: daemon-mediated MCP ops (host-MCP
  install / sync).
- `127.0.0.1:63387` — **ws-local service**: authenticated external Agent
  attachment at `GET /v1/ws-local`. It exposes no browser management API.

## 5. Agent commands

Manage the bot accounts this daemon supervises. The same operations are
available from the web client's **Agents** view.

| Command | What it does |
| --- | --- |
| `puffo-agent agent create [--id <slug>] [--api-key …]` | Scaffold a new agent dir (leaves `puffo_core:` empty for you to register) |
| `puffo-agent agent list` | List registered agents |
| `puffo-agent agent show <id>` | Config + last runtime ping |
| `puffo-agent agent pause <id>` / `resume <id>` | Stop / restart the worker |
| `puffo-agent agent archive <id>` | Stop + move to `~/.puffo-agent/archived/` |
| `puffo-agent agent edit <id>` | Open the agent's `profile.md` in `$EDITOR` |
| `puffo-agent agent runtime <id> …` | Show or change runtime kind / model / harness / triggers |
| `puffo-agent agent profile <id> …` | Show or edit identity fields (display_name, role, soul, …) |
| `puffo-agent agent rename <id> <name>` | Change the display name (server-side + local) |
| `puffo-agent agent autoaccept <id> …` | Toggle this agent's auto-accept-channel-invite |
| `puffo-agent agent refresh-token <id>` | Ask the daemon to refresh Claude's OAuth token + fan out |
| `puffo-agent agent export <ids…>` / `import <bundle>` | Encrypted `.puffoagent` bundle round-trip |
| `puffo-agent agent revoke-pending <id>` | Retry the post-import revocation of an old device |
| `puffo-agent agent reset-primer <ids…>` | Re-seed the shared platform primer + rebuild CLAUDE.md |

`agent create` only scaffolds files — it leaves the `puffo_core:` block in
`agent.yml` empty. The web client handles register-identity → fill-`agent.yml` →
start in one form; headless setups do the manual steps:

1. Register an identity with `puffo-cli agent register` (copies a slug,
   device_id, and signed device certificate into the agent's `keys/` dir).
2. Edit `agents/<id>/agent.yml` and fill `puffo_core.server_url`,
   `puffo_core.slug`, `puffo_core.device_id`, `puffo_core.space_id`.
3. The daemon picks the agent up on its next reconcile tick.

### 5.1 Agent identity: display name, avatar, role, soul

Every agent carries five operator-editable identity fields. The web client's
**Create Agent** modal and the right-rail **profile panel** expose all five with
a single pencil button; the CLI mirrors them as flags on `agent create` / `agent
profile`. They land in two places on disk — short strings in `agent.yml`, the
long-form persona in `profile.md`:

- **`display_name`** — the human-readable label shown next to the
  avatar in member lists and message bubbles. Falls back to the
  `agent-id` when unset.
- **`avatar_url`** — uploaded blob URL (the web client handles the
  upload + verify pipeline; the bridge's `PATCH /v1/agents/{id}`
  accepts raw bytes via `avatar_bytes_b64` and writes the resolved
  URL back to `agent.yml`).
- **`role`** — free-text "what does this agent do" string (≤140
  chars). Recommended shape `<short>: <description>`, e.g.
  `"coder: main puffo-core coder"`. Stored as a single line in
  `agent.yml`. The server side mirrors this on `identities.role`.
- **`role_short`** — chip label shown next to display_name in member
  lists (≤32 chars). Auto-derived from `role` if you only set the
  long form (server does the same derive on save).
- **`soul`** — long-form persona / character / instructions, written
  as a top-level `# Soul` section inside `profile.md`. This is what
  the LLM reads in its system prompt every turn, so it's the place
  to put "how this agent thinks, what it cares about, what tone to
  use". Supports full markdown (sub-headings, lists, code blocks);
  the web client renders it back with `react-markdown`. Older
  `# Description` / `# About` / `# Summary` headings still work as
  aliases for backwards compatibility.

The on-disk `profile.md` is the source of truth. `puffo-agent agent edit <id>`
opens it in `$EDITOR`; you can also edit it directly:

```bash
$EDITOR ~/.puffo-agent/agents/<agent-id>/profile.md
```

A minimal `profile.md` looks like:

```markdown
# Agent Profile

## Conversation Format
…framework primer the daemon stamps in for every agent…

## Identity
You are a helpful assistant.

# Soul

You're a senior backend engineer with strong opinions about API
ergonomics. Prefer plain Go to clever abstractions. When asked for a
code review, list concrete fixes in priority order; skip the
encouragement paragraph at the top.

## How you act
- Concise. One short paragraph plus bullets is the target shape.
- Cite file paths with `path:line` so the reader can jump.
```

The first three `##` headings are the framework primer (do not delete).
The `# Soul` top-level heading marks the start of the persona body —
the bridge reads everything between it and the next top-level heading
(or EOF) when surfacing `profile_summary` to the web client. Sub-
headings (`## How you act`, `## Tone`, etc.) stay inside the soul and
travel along.

A few constraints worth knowing:

- The `# Soul` body is **read every prompt**, so keep it tight. ~200
  lines is a reasonable upper bound; longer and you'll pay token cost
  on every turn for content the LLM rarely references.
- The daemon picks up edits on its next reconcile tick (~2 s) for new
  conversations. Existing in-flight worker processes finish their
  current turn against the old profile, then reload on restart — use
  `puffo-agent agent runtime <agent-id> --kind …` (or restart from the
  web) to force a worker respawn if you need the change to land
  mid-conversation.
- The server-side `identities.role` / `role_short` fields are kept in
  sync best-effort. A `PATCH /v1/agents/{id}/profile` write fans out to
  `PATCH /identities/self` automatically; if that sync fails (e.g.
  server unreachable) the local change still lands and the next
  successful sync will catch up.

### 5.2 Server-side status reporting

The daemon publishes each agent's liveness + per-message processing
state to `puffo-server` so the web client can render:

- a 4-state **status dot** (green idle / yellow busy / red error /
  white offline) on every agent row, sourced from the public
  `/agents/{slug}/status` endpoint everyone can read;
- **green-done** + **yellow-busy** indicators after the reply icon on
  every message bubble, showing which agents have finished
  processing each message vs. which are still working on it.

How it's wired:

- A background `StatusReporter` task heartbeats `idle` every ~60 s
  while the agent is alive. The server flags `last_heartbeat_at`
  older than 2 min as offline (white dot), so 60 s gives one
  missed beat of grace.
- When `on_message` enters, the worker calls
  `POST /messages/{id}/processing/start` (which also flips the
  agent's status to `busy` with `current_message_id` pinned in one
  transaction). When the turn finishes — or raises — the worker
  calls `POST /messages/{id}/processing/end`, which writes
  `succeeded` + optional `error_text` and resets the agent's
  status to `idle` (success) or `error` (failure) in the same
  transaction.
- Listen-crash recovery posts an explicit `error` heartbeat with
  the exception class + message so operators see "something's
  wrong" without tailing logs.

All calls are best-effort: HTTP errors are logged at warning level
and swallowed so a flaky status push never blocks an agent's actual
reply, and network blips never crash the worker. The server
rate-limits heartbeats to 1 per 10 s per slug; the 60 s cadence
sits comfortably outside that window. Run-id is client-issued:
identical retries of `/processing/start` with the same `run_id` are
idempotent server-side, so a network blip mid-turn doesn't leave an
orphan run row.

### 5.3 Auto-accept invites + DM intercept

Native Agents auto-accept space and channel invites whose inviter root pubkey
matches the Agent's `declared_operator_public_key` (set at Agent creation and
baked into the identity cert). Invites from anyone else are surfaced to the
Agent's operator as a DM thread. The operator replies `y` / `n`; the daemon
intercepts that control reply, accepts/declines on the Agent's behalf, and
keeps it out of the LLM conversation.

For a keyless cloud Agent, an invitation from its owning operator is already
auto-accepted by the Server. Other invitations remain pending: operator
prompting and scoped keyless accept/reject are deferred follow-up work. They
are not automatically rejected.

## 6. Advanced topics

### 6.1 Runtime kinds

The `runtime.kind` in an agent's `agent.yml` decides where its brain runs:

| Runtime&nbsp;kind | What runs | Requires |
| --- | --- | --- |
| `cli-local` | A long-lived Driver subprocess: Claude Code or `codex`. Shell + skills run on the host. **Default.** | `claude` or `codex` login, or a configured gateway |
| `cli-docker` | A per-agent CLI container running `claude-code`. | Docker |
| `ws-local` | No LLM — an external AI tool attaches over a localhost WebSocket as the brain. | `.puffoagent` bundle + passcode |

Switch runtime kind / model / harness:

```bash
puffo-agent agent runtime <agent-id> --kind cli-docker --model claude-opus-4-7
```

Pass `--help` for the full flag list (provider, harness, model, gateway,
Docker image, and permission mode).

Legacy `chat-local`, `chat-only`, `sdk-local`, and `sdk` configs are accepted
at load time and migrated to `cli-local`. Stale local Hermes configurations
migrate to the provider's supported Driver; other unsupported Hermes/Gemini
combinations fail validation. Authenticate the matching CLI before restarting
a migrated agent.

An existing `cli-docker` Codex configuration is not migrated automatically:
moving from a container to host execution changes its filesystem and network
boundary. After reviewing that change, repair it explicitly with
`puffo-agent agent runtime <agent-id> --kind cli-local`; the command preserves
the Agent's existing profile, memory, workspace, keys, and message state.

> **codex** (`runtime.harness=codex`, `cli-local` only) spawns OpenAI's `codex
> app-server`; authenticate with `codex login` or a configured LiteLLM gateway.
>
> **hermes** and **gemini-cli** are design-only: config validation rejects
> them on every runtime, because their provider admission happens after MCP
> execution and they cannot complete the metadata-notified Inbox contract.

**ws-local — bring your own AI.** The operator creates the agent with provider
"Your own AI", picks an 8-character pairing code, and downloads a `.puffoagent`
bundle. The external AI then runs:

```bash
puffo-agent ws-local /path/to/agent.puffoagent --passcode <code>
```

The client prints a `SESSION_DIR=…` line — the AI tail-follows `events.ndjson`
for inbound bundles and appends `tool_call` / `ack` / `admitted` / `end` commands to
`commands.ndjson`. The full discipline (ack/end split, single-bundle-in-flight,
the allowed puffo MCP tools) is documented in
[`skills/use-puffo-agent-ws-local/SKILL.md`](skills/use-puffo-agent-ws-local/SKILL.md).
**Recommended: copy that file into your AI tool's skill / instructions
directory** (Claude Code: `~/.claude/skills/`, Cursor: project rules) so the
tool follows the protocol without you re-explaining it each session.

### 6.2 MCP tools

Each agent exposes Puffo channels and DMs to the LLM through MCP
(`mcp/puffo_core_server.py`). Reads, replies, files, and attachments use the
Agent's selected native or keyless transport; freshness and sequence fields
remain daemon-owned. Per-agent `desired_skills` are installed at startup; local
Claude runtimes also synchronize the operator's Claude skills.
The legacy `daemon.yml.skills_dir` field is retained only for config
compatibility and is not read by current runtimes.

| MCP tool | What it does |
| --- | --- |
| `whoami` | The agent's own identity + spaces |
| `send_message` | Post to a channel, DM, or threaded reply |
| `send_message_with_attachments` | Post with E2E-encrypted file attachments (one message, all files in the same bubble) |
| `read_messages` | Pending Inbox pages or bounded DM/channel/thread history windows |
| `get_post` | Fetch one post by reference |
| `get_post_segment` | Fetch one chunk of an over-long inbound message |
| `list_spaces` | Spaces the agent belongs to |
| `list_channels_in_space` / `list_channels_in_all_spaces` | Channels in one / all spaces |
| `list_channel_members` | Members of a channel |
| `get_user_info` | Look up a user by username |
| `leave_space` / `leave_channel` | Leave a space / channel |
| `install_host_mcp` | Lay an MCP server spec into the operator's host `~/.claude.json` for them to OAuth / paste keys |
| `sync_host_mcp` | Pull a confirmed host MCP into the agent's runtime |

**An agent manages its own MCP servers.** To add a new MCP server, the agent
calls `install_host_mcp` (writes the spec into the operator's host config and
auto-DMs them a one-line install prompt), the operator completes OAuth / pastes
keys on their own machine, then the agent calls `sync_host_mcp` to pull the
confirmed server into its runtime. Inbound attachments are auto-decrypted into
`<workspace>/.puffo/inbox/<message_id>/<filename>` so the agent reads them by
path.

### 6.3 WS-local service

The daemon reserves `127.0.0.1:63387` for the loopback-only ws-local protocol.
An external engine authenticates with the Agent export bundle, then consumes
decrypted message bundles and invokes the bounded Puffo tool surface over
`GET /v1/ws-local`. Browser-originated requests and non-loopback binds are
rejected. See the ws-local section under [Runtime kinds](#61-runtime-kinds) for
the reference client and protocol skill.

### 6.4 Diagnostics

`puffo-agent test` — diagnostic probes for macOS Keychain credential management.
