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Plexum-fabric-channel-plugin/internal/tools/contracts.go
hzhang ed3676ebc8 feat: Phase F-5+F-7 — command-sync + sub-discussion + channel-create tools 
Bundles the remaining "agent does things in Fabric" surface, skipping
presence-sync (Plexum's state machine isn't 1:1 with HF status semantics)
and attachments (Plexum has no media pipeline yet) — both deferred.

internal/subdisc/ (~140 LOC + 5 tests): persistent KV at
<profile>/state/plugin-kv/fabric-sub-discussions.json
- Entry: SubChannelID, HostAgentID, HostUserID, GuestUserIDs,
  HostGuide, GuestGuide, CallbackGuildNodeID, CallbackChannelID, CreatedAt
- Open / Lookup / LookupForHost (host-enforcement) / Add / Remove / All
- atomic tmp+rename persistence; corrupt file = start empty

internal/tools/tools.go — 7 new tools:
- create-chat-channel       (xType=general)
- create-work-channel       (xType=work)
- create-report-channel     (xType=report)
- create-discussion-channel (xType=discuss)
- discussion-complete       (post summary + close channel)
- create-sub-discussion     (create + invite + KV store + greeting)
- close-sub-discussion      (host-only; posts callback to parent + closes)

internal/fabric/client.go: CreateChannel / CloseChannel /
JoinChannel / LeaveChannel / SetChannelPurpose / Canvas CRUD /
SyncCommands (added in earlier F-4 commit; reused here)

cmd/plexum-fabric-channel-plugin/main.go:
- subdisc.Store opened from DefaultPath at init; passed into tools.Deps
- HostConfig adds commands_sync_key + sync_commands (defaults
  ["new","stop"]) — F-5 command-sync to every (agent,guild) pair at
  init when key is set; silently skips when omitted
- syncCommandsToGuilds: best-effort PUT per guild, logs per-guild
  outcome

scripts/install.sh: manifest tools[] expanded to 16 entries
(9 from F-4 + 7 new). create-channel variants share a schema shape.

Live verified:
  $ plexum plugin-call create-chat-channel \
      '{"agent_id":"fabrictester","guild_node_id":"test-guild2",
        "name":"plexum-f7-smoke","is_public":true}'
    → "created general channel plexum-f7-smoke (id=6315e636-...)"
  $ plexum plugin-call fabric-channel-list ...
    → 3 channels listed including the new one

F-6 (attachments) + F-5b (presence-sync) + F-8 (coalesce) deliberately
deferred — see DEV-NOTES.

Tests: 5 new in internal/subdisc (27 total in this repo).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
2026-05-31 15:40:09 +01:00

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package tools
import (
"encoding/json"
plugin "git.hangman-lab.top/hzhang/Plexum-sdk-go/plugin"
)
// allContracts is the static manifest list of all agent-facing tools.
// install.sh reads this via a Go-build introspection step? No — we'd
// need a separate emit-manifest binary. For now, install.sh has the
// same JSON inline (keep in sync; trivially small). Future refinement
// could auto-emit.
var allContracts = []plugin.ToolContract{
{
Name: "send",
Description: "Outbound channel reply — host calls this after an inbound dispatch (agent-side calls usually prefer `fabric-send-message`).",
InputSchema: json.RawMessage(`{
"type": "object",
"properties": {
"channel_name": {"type": "string"},
"session_id": {"type": "string"},
"message": {"type": "string"}
},
"required": ["channel_name", "message"]
}`),
},
{
Name: "fabric-send-message",
Description: "Post a normal message to a Fabric channel as the bound agent. guild_node_id defaults to the agent's first guild when omitted.",
InputSchema: json.RawMessage(`{
"type": "object",
"properties": {
"agent_id": {"type": "string"},
"guild_node_id": {"type": "string"},
"channel_id": {"type": "string"},
"content": {"type": "string"}
},
"required": ["agent_id", "channel_id", "content"]
}`),
},
{
Name: "fabric-send-sys-msg",
Description: "Post a system-kind message to a channel (not subject to turn engine / wakeup).",
InputSchema: json.RawMessage(`{
"type": "object",
"properties": {
"agent_id": {"type": "string"},
"guild_node_id": {"type": "string"},
"channel_id": {"type": "string"},
"content": {"type": "string"}
},
"required": ["agent_id", "guild_node_id", "channel_id", "content"]
}`),
},
{
Name: "fabric-channel-list",
Description: "List channels visible to the agent in a guild (public + member channels).",
InputSchema: json.RawMessage(`{
"type": "object",
"properties": {
"agent_id": {"type": "string"},
"guild_node_id": {"type": "string"}
},
"required": ["agent_id", "guild_node_id"]
}`),
},
{
Name: "fabric-guild-list",
Description: "List the guilds the agent belongs to (nodes + endpoints).",
InputSchema: json.RawMessage(`{
"type": "object",
"properties": {
"agent_id": {"type": "string"}
},
"required": ["agent_id"]
}`),
},
{
Name: "fabric-message-history",
Description: "Paginate channel messages by seq. seq_from/seq_to/limit are optional (server caps limit at 200).",
InputSchema: json.RawMessage(`{
"type": "object",
"properties": {
"agent_id": {"type": "string"},
"guild_node_id": {"type": "string"},
"channel_id": {"type": "string"},
"seq_from": {"type": "integer"},
"seq_to": {"type": "integer"},
"limit": {"type": "integer"}
},
"required": ["agent_id", "guild_node_id", "channel_id"]
}`),
},
{
Name: "fabric-channel-set-purpose",
Description: "Update the channel's free-form purpose text.",
InputSchema: json.RawMessage(`{
"type": "object",
"properties": {
"agent_id": {"type": "string"},
"guild_node_id": {"type": "string"},
"channel_id": {"type": "string"},
"purpose": {"type": "string"}
},
"required": ["agent_id", "guild_node_id", "channel_id", "purpose"]
}`),
},
{
Name: "fabric-channel",
Description: "Fetch metadata + member list for a specific channel.",
InputSchema: json.RawMessage(`{
"type": "object",
"properties": {
"agent_id": {"type": "string"},
"guild_node_id": {"type": "string"},
"channel_id": {"type": "string"}
},
"required": ["agent_id", "guild_node_id", "channel_id"]
}`),
},
{
Name: "fabric-canvas",
Description: "Read or write the channel's pinned canvas doc. op: get|share|update|remove. share/update need title+format+source.",
InputSchema: json.RawMessage(`{
"type": "object",
"properties": {
"agent_id": {"type": "string"},
"guild_node_id": {"type": "string"},
"channel_id": {"type": "string"},
"op": {"type": "string", "enum": ["get","share","update","remove"]},
"title": {"type": "string"},
"format": {"type": "string", "enum": ["md","html","text"]},
"source": {"type": "string"}
},
"required": ["agent_id", "guild_node_id", "channel_id", "op"]
}`),
},
// ---- channel creation (4 x-types share the same shape) ----
createChannelContract("create-chat-channel", "Create a chat channel (xType=general)."),
createChannelContract("create-work-channel", "Create a work channel (xType=work)."),
createChannelContract("create-report-channel", "Create a report channel (xType=report)."),
createChannelContract("create-discussion-channel", "Create a discussion channel (xType=discuss)."),
{
Name: "discussion-complete",
Description: "Post a summary then close the channel — concludes a discussion.",
InputSchema: json.RawMessage(`{
"type": "object",
"properties": {
"agent_id": {"type": "string"},
"guild_node_id": {"type": "string"},
"channel_id": {"type": "string"},
"summary": {"type": "string"}
},
"required": ["agent_id", "guild_node_id", "channel_id", "summary"]
}`),
},
{
Name: "create-sub-discussion",
Description: "Spawn a new sub-discussion channel with the calling agent as host + invited guests; remembered in plugin KV so close-sub-discussion can post the callback to the parent channel.",
InputSchema: json.RawMessage(`{
"type": "object",
"properties": {
"agent_id": {"type": "string"},
"guild_node_id": {"type": "string"},
"name": {"type": "string"},
"guest_user_ids": {"type": "array", "items": {"type": "string"}},
"host_guide": {"type": "string"},
"guest_guide": {"type": "string"},
"parent_channel_id":{"type": "string"},
"greeting": {"type": "string"},
"x_type": {"type": "string", "enum": ["discuss","work","report","general"]}
},
"required": ["agent_id", "guild_node_id", "name", "parent_channel_id"]
}`),
},
{
Name: "close-sub-discussion",
Description: "Close a sub-discussion the calling agent originally created; posts a callback message to the parent channel.",
InputSchema: json.RawMessage(`{
"type": "object",
"properties": {
"agent_id": {"type": "string"},
"sub_channel_id":{"type": "string"},
"summary": {"type": "string"}
},
"required": ["agent_id", "sub_channel_id"]
}`),
},
}
// createChannelContract returns the shared schema for the four
// create-*-channel tool variants.
func createChannelContract(name, description string) plugin.ToolContract {
return plugin.ToolContract{
Name: name, Description: description,
InputSchema: json.RawMessage(`{
"type": "object",
"properties": {
"agent_id": {"type": "string"},
"guild_node_id": {"type": "string"},
"name": {"type": "string"},
"is_public": {"type": "boolean"},
"member_user_ids": {"type": "array", "items": {"type": "string"}},
"listeners": {"type": "array", "items": {"type": "string"}},
"on_duty": {"type": "string"},
"purpose": {"type": "string"}
},
"required": ["agent_id", "guild_node_id", "name"]
}`),
}
}
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