Single Go module, four top-level packages under packages/. Import
paths become github.com/patriceckhart/zot/packages/<name>; downstream
consumers can depend on individual packages without pulling the rest.
Layout:
packages/provider/ LLM clients + catalog
packages/provider/auth/ credential store + OAuth + login server
packages/core/ agent loop, sessions, cost
packages/tui/ terminal toolkit + chat view
packages/agent/ CLI wiring, system prompt
extensions/ extproto/ modes/ tools/ skills/ swarm/
sdk/ (was pkg/zotcore, package renamed zotcore -> sdk)
ext/ (was pkg/zotext, package renamed zotext -> ext)
internal/ and pkg/ removed. The internal/assets logo moved into
packages/provider/auth/assets.
Public Go SDK identifiers renamed:
pkg/zotcore (package zotcore) -> packages/agent/sdk (package sdk)
pkg/zotext (package zotext) -> packages/agent/ext (package ext)
This breaks Go-based extensions and embedders; the JSON wire protocol
for extensions and RPC is unchanged, so non-Go extensions, already-
built extension binaries, and zot rpc consumers are unaffected.
Docs, examples, and the built-in write-zot-extension skill updated
for the new paths and identifiers. Shadow-bug fixes in code samples
(ext := ext.New -> e := ext.New).
Phase 1: extensions can register slash commands and push chat
notifications. Tools and event subscriptions land in later phases.
Architecture: each extension is its own subprocess. Zot launches
it on startup, completes a hello/hello_ack handshake over its
stdin/stdout, then routes slash commands the extension registered.
Crash isolation, language agnostic, works with any executable
that can read/write json lines.
What lands here:
- internal/extproto: shared wire-format types (Frame, HelloFromExt,
RegisterCommandFromExt, CommandResponseFromExt, NotifyFromExt,
HelloAckFromHost, CommandInvokedFromHost, ShutdownFromHost...).
Both the host and the SDK marshal/unmarshal the same types.
- internal/agent/extensions: discovery + lifecycle manager.
- Discover() walks $ZOT_HOME/extensions and ./.zot/extensions
(project-local first, global second; first wins for duplicates)
- Spawns each enabled extension, captures stderr to
$ZOT_HOME/logs/ext-<name>.log
- Reads frames in a goroutine, dispatches register_command and
notify, correlates command_response by id
- Stop() sends shutdown, waits 2s, then SIGTERM/SIGKILL
- HostHooks abstracts the tui callbacks (Notify/Submit/Insert/Display)
- Interactive bridge: extensions slot into the slash dispatcher
*after* the built-in catalog, so built-ins always win on conflict.
Extension-registered commands also flow into the autocomplete
popup and /help via slashSuggester.SetExtra. NotifyFromExt frames
render as muted [ext-name] notes above the editor.
- internal/agent/extcmd: `zot ext` CLI.
list / install <path|git-url> / remove / enable / disable / logs
- pkg/zotext: public Go SDK. Construct an Extension, register
Command(name, desc, fn), call Run(). Fn returns a Response built
with Prompt(), Insert(), Display(), Noop(), or Errorf(). Stderr
via Logf() so stdout stays clean for the protocol.
- examples/extensions/hello: working Go example registering /hello
and /summon, plus README + extension.json.
- docs/extensions.md: full protocol reference, including a
~30-line raw-Python example for users who don't want the SDK.
Tests: internal/agent/extensions/manager_test.go spawns a mock
extension via /bin/sh and exercises the full handshake -> register
-> invoke -> response cycle. Verifies the hello frame ordering,
correlation-by-id, and graceful shutdown.
Verified manually: built and installed the example, drove it via
stdin pipes, confirmed clean handshake + correct frame ordering
and shutdown_ack. Builds vet-clean on darwin / linux / windows.
Editor.Insert exported (was Editor.insert) so the extension hooks
can drop text into the input.
