Files
hermes-agent/ui-tui
Siddharth Balyan afc3b7c6f3 feat(connectors): one backend-owned connection operation, with a setup card on Desktop, TUI and CLI (#111008)
* feat(connectors): the desktop connects apps through one backend-owned operation

Re-based onto main after #109517, #110368, #110574 and #110843 landed as squash
merges (e0ef0eb9c3, d105376b21, ee2f5629b8, 1ab32b212b): the branch's history
no longer shared a base with main, so this is the PR's exact delta against
+3762/-1470, identical to the branch tip 05d7f2d3d5.

The fifteen commits it carried, in order:

--- feat(connectors): the wire follows the connector contract (six-state status, required toolkit metadata, connectionId on mint)

Hermes types exactly what the contract page writes: /tmp/magic/CONTRACT-TOOLKIT-METADATA.resolved.md
(carriers: portal PR2 `sid/connection-api` for the enum and account rows, the portal contract branch
on top of it for the list metadata). No optional-for-compat fields, no fallback branch, no seven-state
word left in the tree. A gateway that does not speak this contract fails validation loudly.

Wire (tools/connectors/gateway/wire.py): `ConnectionStatus` is the six values, `pending` covering the
vendor's INITIALIZING and INITIATED; `ConnectorListItem` requires title, description, https iconUrl and
authKind, and carries activeConnectionId when the session binds an account; `ConnectorListResponse`
types a page whole with its total; `ConnectorAccount` and `ConnectorAccountsResponse` type the account
routes; a mint result names its connectionId on `initiated` and never on `failed`; CONNECTION_REQUIRED
carries connectUrl and connectionId together or not at all; `account` exists on the execute call and is
never sent while multi-account is off.

Client: `list_connectors(search, connected)` refuses a search under three characters before any
request and parses every page whole; `list_accounts` and `account_status` read the account routes,
404 `connection_not_found` is None and 429 raises `RateLimited(retry_after)`.

Watcher: the target keeps the account id the mint named and the toolkit's title and icon from one
list read before the card is emitted; `_status_for` is the one seam between the watcher and the
gateway's status source (the list walk today; the per-account route replaces that body only).
`pending` and a missing status move nothing; revoked and inactive are failed.

Desktop: `ConnectorRow` is the strict list item; `ConnectorRowSeed` is what a tool call's args can
say; `connection.request`/`update` targets carry `connection_id`, `title`, `icon_url`; the mark
ladder is glyph, vendor icon as a plain image, favicon, monogram.

Tests run red first: wire rejects the retired words and the missing metadata; client search
minimum, execute omits account, account_status 404/429; managed targets carry the metadata and the
account id, a pending row moves nothing; the logo ladder order; the store passes the fields through.

--- feat(connectors): onboarding connect-first rides the connection operation

The guided first build had its own connector surface: a 2 s connectors.list poll loop, an auto-open
of every minted link, a hidden "[setup] links opened" note that painted as a user bubble, CONNECT
FIRST rows in the transcript, and a "Start with N apps connected" composer pill that sent the go
signal early. Delete all of it. The build session's first manage_connections connect now shows the
same card as any chat, and the settled tool result is the go signal.

Deleted: store/first-build-connectors.ts, assistant-ui/first-build-connectors.tsx (nothing rendered
it any more), lib/first-build-start.ts, onboarding-chat/start.tsx, the first-build session markers in
handoff-receipt.ts, the connectionRows / latestConnectorPart helpers they were the last readers of,
and the five strings only they used.

The runbook (setup-profile.ts::connectFirstRunbook) now describes the operation's real contract: one
connect call with every picked slug, one card with a row per app, blocks until settled, a per-app
result of connected / skipped / not_connected. No wait, no "Start with", no "already active" branch
(the result never carried it), and no offer to re-mint: Try again and Continue live on the card, and a
Continue means the user moved on.

Tests (red first): the runbook names one connect call and its per-app result and never the retired
model actions; the no-account rule survives an empty pick.

--- feat(connectors): the registry is keyed by profile, every watch read is bounded by the deadline, connectionId is optional, connect and execute carry returnTo and op

Registry (P1-14): tools/connectors/live.py keys an operation by (profile home, session key). Two multiplexed
profiles can carry the same timestamp-based session key; the tool thread opens under its turn's profile
override and the RPC side names the session record's profile home, the default profile resolving to the
process home on both sides.

Watch reads (P1-8 residual): list_connectors takes a per-page timeout and the watcher bounds each read by
the operation's remaining deadline (floor one second), so a stalled gateway page cannot hold the operation
past its deadline.

Contract follow-up from the portal handoff (/tmp/magic/HANDOFF-HERMES-PR3-PORTAL-CONTRACT.md): connectionId
on a mint result and on CONNECTION_REQUIRED is plain Optional (a no-auth toolkit answers active with none; a
failed mint answers with neither link nor id); a target without one has nothing to watch. Connect and
execute requests carry returnTo (hermes-desktop | hermes-desktop-dev | portal) and op, so the vendor's done
page can send the browser back to the app; the call sites and the deep-link handler follow in the next
commit.

Tests, red first: two profiles share a session key without seeing each other; each watch read shrinks with
the deadline; the client honours a per-page timeout; the optional id; the two request fields. The fakes'
list_connectors accept the timeout keyword; two wrapper spies that did not were the cause of a 300 s hang
under the per-file harness.

--- feat(connectors): an MCP target runs on the shared connection operation

manage_connections ran MCP targets as a renderer errand: the desktop card ran
the catalog lookup, the install and the OAuth flow, then told the backend what
had happened, and every surface without a card got `unavailable` plus two
terminal commands. That left the outcome in the renderer's word, and left the
model unable to connect an MCP server anywhere but the desktop.

The backend now owns the work, the way it already owns a managed connector.
`prepare` starts the OAuth flow in process and points the browser at the
backend's own callback route; an install that still needs credentials waits
pending and publishes their names as `required_env`; `observe` reads the flow
or the install worker on every tick. The worker itself moved out of
tui_gateway/mcp_oauth_sessions.py into tools/connectors/mcp_oauth.py, and that
module now calls it, so the Capabilities tab keeps its RPC session table.

The card may only say approved, skipped or continue: a claim of any other
state moves nothing. With that, `renderer_flow` and the `unavailable` state
have no producer left and are gone from the contract. Off the desktop there is
no card, so the action runs at once and the result carries the authorization
URL for the user to open.

Try again reaches the same work: `_reissue` dispatches on `target.kind`, so an
MCP row re-runs its own install, enable or OAuth instead of minting a managed
gateway link.

(cherry picked from commit fa0438c4121807604e7c983ba42b901314a1305b)

--- feat(connectors): the MCP card projects the operation instead of running the flow

The MCP setup card used to own the work: it called the catalog, ran
installMcpCatalogEntry, polled the action, drove the OAuth window, and then told
the backend what had happened through connection.respond. That made the renderer
a second authority on target state, so an install that finished after the window
closed, or a card that never mounted, left the operation with a state nobody
could correct. PR3 moves that work to the backend, so the card has one job left:
show the operation and send the user's consent.

McpSetupPending now renders request.targets the way ConnectorOffer renders them:
one row per target, one verb by (action, state), Continue below the shell.
Install and Enable send {status: 'approved'} and nothing else; an authorize row
opens the link the backend minted, with no OAuth RPC of its own; a running
install holds its verb with the busy mark; a failed row sends
connectors.connect {reconnect: true} on the open operation, the same call the
managed card makes. The owner lookup and that call are now shared helpers on
connector-tool.tsx rather than a second copy here.

ConnectionTargetOutcome loses connected / initiated / failed: those were the
renderer reporting state, which it no longer may do. ConnectionActor loses
renderer_flow for the same reason. ConnectionOperationTarget gains required_env,
the credentials an MCP install is still waiting for; the card renders a field per
entry under the pending row and holds Install until every required one has text,
so the values travel with the approval instead of through a separate catalog call.

(cherry picked from commit 2e42ad19f63e41f274a87199d07eb99a7c995cbe)

--- fix(connectors): the toolkit metadata leaves the wire; the vendor logo is derived from the slug

Sid cancelled portal PR3 (the toolkit metadata on the list item) on 2026-09-14, so the fields the contract
commit typed as required come off the wire: no title, description, iconUrl, authKind or activeConnectionId
on the list item, no total on the page, no search or connected query, no title or icon_url on a target
snapshot. The list item is exactly what portal #1220 emits.

The desktop derives the vendor logo from the toolkit slug instead (`connectorIconUrl`,
https://logos.composio.dev/api/{slug}; the gateway slug is the vendor slug, checked for every lead-order
pick), rendered as a plain image because the host sends no CORS header. The title stays
`connectorTitle(slug)`. The mark ladder is unchanged: glyph, derived vendor icon, favicon, monogram.

Everything else in the contract stands: six-state status, optional connectionId on mint results and on
CONNECTION_REQUIRED, returnTo and op, the account routes. The contract commit's message still names the
metadata; this commit is the correction.

--- fix(connectors): an MCP target survives the card's Continue, and the model is not sent to an action that refuses it

The review of the MCP backend found eight defects; each one is a test first.

- The off-desktop note told the model to confirm with action 'status', which refuses MCP
  names outright. It now says the authorization finishes in the background and the tools
  arrive on the next turn.
- The card's existence is a property of the session. A missing callback no longer routes a
  desktop session down the off-desktop path, where the model would be handed a live link.
- A second failure of a backend attempt was published with actor 'user'. ``refresh`` takes
  the actor, so the frame says who produced the text.
- Continue on the RPC thread can settle the operation between any read of a target's state
  and the transition that follows it. A settled operation has a frozen result, so the lost
  move is dropped; an IllegalTransition no longer escapes into the tool result. The same
  rule covers a worker whose outcome arrives late and a Try again that arrives after Continue.
- Try again on an install carried no credentials, so the second install ran with an empty
  env. The approved map is kept on the runner (never on the target: target fields are
  serialised to the model) and reused.
- An approval that does not cover a required credential no longer reaches the worker, where
  ``install_entry``'s prompt would block on stdin forever; the row waits for the card's
  fields instead.
- ``enable`` writes ``mcp_servers`` under the scope and lock the dashboard's toggle route
  uses, so the two read-modify-write paths in one process cannot drop each other's write.
- Several authorize targets start their flows together and share one wait; one wait per
  target kept the card empty for minutes.
- The off-desktop operation is in no session's registry, so it now emits no connection.update.

Try again is also refused for a target the transition table cannot move back to 'initiated'
(an MCP target has no move out of 'expired') and for an operation that settled during the call.

The contract test that froze the Actor enum is replaced by two behaviour tests: no actor but
the backend watcher can connect an MCP target, and the card's word never moves one.

(cherry picked from commit 081c16412b48667758a77a7e7c29eaf2be6a93dd)

--- fix(connectors): the watcher reads one account route per target, and every frame carries its seq

The watch loop walked the whole toolkit list once per tick to learn whether one
target had connected. That read costs a vendor call per page, cannot tell one
account from another, and forced `awaiting_new_attempt`: after a forced
reconnect the list still reported the OLD account `active`, so the row had to be
disbelieved until it read as something else once. The gateway now serves
`GET /v1/connectors/accounts/{connectionId}`, so each pending target reads its
own account: the id the mint named, one read per target per tick at 1 Hz (the
route's bucket is 180/min per principal), each bounded by the operation's
remaining deadline. A 429 parks that one target until its Retry-After passes and
leaves the others reading. A 404 is "not yet" until the deadline. A target the
mint gave no account for has nothing to read, so it is not read. A forced
reconnect watches the new account, which is why `awaiting_new_attempt` and its
two tests are gone.

`mint` and `run_remote` now name where the browser should come back to
(`returnTo`, plus the operation id on a mint), so the vendor's done page can
hand the user back to the desktop app that asked instead of stranding them on a
web page. Only the desktop registers that URL scheme, so no other surface sends
either field.

`connection.update` frames were built by re-reading the operation after the lock
was released, so a second writer could give an older frame a newer state and the
renderer could not tell which frame was last. Every write now advances a
monotonic `seq` and takes its snapshot under the same lock, and the emitter sends
that snapshot; a renderer that keeps the highest seq per operation can drop a
frame that arrives out of order. `connectors.operation.wake` lets the desktop's
deep-link return ask for a read now instead of at the next tick; it only shortens
the wait and trusts nothing else in the link.

(cherry picked from commit f5423cf72302b92b26c043495184ad6426fa2b36)

--- fix(connectors): the desktop card follows the operation, and says so out loud

The MCP card was a second implementation of the connector card with the
review's defects: it painted for any request on the session, kept its
controls after the operation settled, offered an approve verb while the
backend was still minting an authorize link, and re-enabled Install when
the RPC returned rather than when the state frame moved the row. A second
click in that window sent the consent twice.

The renderer now reads the operation's `seq`: an update or a status frame
whose sequence is not greater than the one already applied changes
nothing, and a resume snapshot neither revives a settled card nor puts
back a row a newer frame has moved. Without it the transport's ordering
decided what the user saw.

`hermes://connections/done?op=…` brings the user back from the browser to
the session that opened the operation and wakes its watcher, so the row
moves at once instead of at the watcher's next tick. Only the op id is
used; the link's status moves no row.

Each row's mark and cue are one polite live region, so a row that flips is
heard and not only seen, focus follows the row the backend moved while the
card holds it, and the waiting mark stops spinning under reduced motion.

(cherry picked from commit 7c30d252556d7d496ddb354b50bcecc41bceef27)

--- fix(connectors): the renderer types seq as the wire carries it

The watcher commit made `seq` a required field on every operation frame. The
desktop store still declared its own optional `seq` so it would compile against a
backend that predates the field; that backend no longer exists on this branch, so
the hedge is dead code and the fixtures were short one field. The store now reads
`seq` from the shared types, and the fixtures count the way the backend does.

The repeat-frame test asserted the whole request keeps its reference. With a real
rising `seq` the request must change; the invariant the test guards is that the
target row keeps its identity so open credential inputs do not remount.

--- fix(connectors): a URL that arrives after the shared wait still lands on its row

The shared prepare wait failed every row still pending when it ran out, while
that row's own thread was still waiting on the provider. When the URL arrived a
moment later the thread's move raised inside the daemon thread, the link was
lost, and Try again started a second flow. The wait now bounds only how long
prepare blocks; a row still pending afterwards is left to its own thread, which
is the only writer of that row and ends with the URL or the flow's own failure.

The comment on the approved credentials said every target field is serialised to
the model; it is not (the snapshot names its keys). The reason they live on the
runner is that they are secrets and the runner's life is exactly the operation's.

--- fix(connectors): the review findings the operation must survive before the fold

The MCP prepare threads and the install worker started with an empty context,
so a named-profile turn's home override never reached them: the flow resolved
the process home's `mcp_servers` and stored the token there. Each thread now
runs in a copy of the calling thread's context. `connection.respond` had the
same gap on the RPC thread: an approval ran the enable, which writes
config.yaml, with no profile bound, so the flag landed in the launch home. The
handler binds the session record's profile the way `_connector_rpc` does;
`config_write_scope(None)` keeps that override, so the enable needs no change.

The watcher raised out of the tool when a per-target Skip landed while that
target's read was in flight: the operation stayed open with `live` closed, and
every later answer got 4004. A read for a row that is no longer live is dropped
at debug; only a refusal on a live row is still a contract violation. The same
skip from the card raced a row the backend had just connected and aborted the
rest of the answer; a skip for a resolved row is ignored and every entry, then
the settle check, still runs.

A read was bounded by the whole remaining deadline, so a hung gateway held the
first read for 300 s and Continue could not return the tool; a read now waits
ten seconds at most. A 429 parked only the target that read, but the budget is
the principal's, so the next target's read in the same tick spent it again:
every live target waits out the one Retry-After.

The MCP surface rule read the platform alone, so a desktop call without the
callback (registry dispatch from execute_code) opened an operation nobody
rendered and blocked for the deadline; it now uses the managed rule, surface
and callback. A write after settlement advanced `seq` while emitting the
frozen frame, so the resume snapshot named a seq no frame carried; the counter
stops at the settle frame. A mint that reports `initiated` with no account id
logs that the watcher cannot read the row.

(cherry picked from commit 587b228016bf8ee2b022e7fa58c2d9f6057809e9)

--- fix(connectors): the desktop card holds a verb until the backend answers, and never takes the keyboard from a credential field

The review of the desktop card found five defects; each one is a test first.

- A resume snapshot was refused whenever the cache held a settled operation, whichever
  operation it was, so a session that opened a second operation after settling the first
  never got its card back from a resume. And the refused snapshot handed the caller the
  settled cache as "the request", so the session was flagged as needing input behind a
  summary with no controls. Only the same operation can refuse the snapshot now, and a
  refused one is no pending card.
- The focus handoff picked the row's first button, which after pending -> initiated is the
  disabled working verb; the focus call was a no-op and the keyboard landed on the document
  body. It picks the first control that can take focus, else the row. It also moved focus out
  of a credential field the user was typing in whenever another row moved; it leaves an
  editable alone. The "focus Continue once every row resolved" branch was dead (Continue
  unmounts the moment nothing is unresolved), so it and its ref plumbing are gone.
- The done link navigated to a settled operation's session and rejected when the wake RPC
  did (4004 once the operation left the live registry). A settled request is ignored, and a
  refused wake is nothing: the wake only shortens the wait, the watcher still ticks.
- Install spun forever when the store refused to send the consent (the operation gone or
  settled under the card): `respondToConnectionRequest` resolves false in that case and the
  verb was only released in `catch`.
- After a partial approval (a required credential missing) the backend answers with a
  same-state frame whose detail names what is missing; nothing released the verb because it
  was held until the row's state moved. The row now remembers the seq the click saw and holds
  the verb only until a frame past it arrives, which is the backend's word on the click
  whether or not the row moved.

(cherry picked from commit 4c534d6e2af979778d9a2423cf97d717edeaa1a9)

--- fix(connectors): a skip that loses the race to the watcher is ignored, not raised

The skip guard read the row's state and then moved it; the watcher can connect the
row between the two, and the refused move aborted the rest of the card's answer.
The refusal itself is now the witness: a move refused for a row that is resolved,
or on a settled operation, is the same nothing-to-do as a row resolved earlier.

Two recording fakes in the managed tests kept their lists on the class; they now
start per instance so a lifted fake cannot share reads between tests.

--- fix(connectors): a resume that lands behind a newer live frame still reports the pending card

The refused-snapshot branch answered "no pending card" for both reasons it can
refuse: the operation settled, or a newer frame already moved a row. Only the
first is no card. For the second the live card is still open and blocking the
turn, so the caller must keep the session flagged as waiting on it.

* test(connectors): defer new connection coverage until implementation settles

Remove PR-added test cases and their unused helpers while retaining
existing tests adapted to the changed connection contract. The three
PR-only renderer test files are removed for now.

Focused behavioral coverage will be added as the final implementation
step before verification. Existing main coverage is not being removed
wholesale, and this does not declare the feature merge-ready.

* fix(connectors): commit MCP authorization at initialize, save setup values after success

The OAuth probe treated one exception as one outcome: any failure after the browser
step restored the token snapshot and manager entry, so a server that accepted the
token but failed tools/list discarded a completed consent. Now the probe reports
whether initialize succeeded (details["initialized"], read from the claimed
MCPServerTask). Failure before that point rolls back as before. Failure after it
saves the server config, keeps the tokens, and reports tools unavailable through
flow.discovery_error; the card can retry discovery without repeating consent.

Catalog install wrote the submitted values to .env before install_entry and the
probe ran. The values now live in the secret scope for the duration of the install
(get_env_value reads through get_secret, so install_entry finds them without a
prompt), and .env is written only after the probe returns tools. A failed probe
removes the server block and writes nothing. _probe_tool_names returns None on a
failed probe instead of an empty list, so failure and a valid empty listing are
distinct.

Failure text is redacted before it reaches target detail: every value the card
submitted for that target is replaced by exact match, then the pattern redactor
runs.

required_env now carries the manifest's secret and default flags; Target carries the
manifest's post_install text as instructions. The wire contract gains secret,
default, instructions and discovery_error; generated TS and OpenRPC regenerated.

* fix(connectors): one OAuth callback receiver picker for the connection card

The card's authorize target built its redirect from the dashboard web server and
raised when none was bound in the process, so a standalone hermes --tui session
could never authorize an MCP server. The receiver is now chosen in one place
(choose_callback_receiver): a pinned pre-registered client keeps the SDK's own
listener on the registered port; a client-advertised loopback URI is used as-is and
its callback arrives through the mcp.servers.oauth.callback relay; otherwise the
backend binds a one-shot loopback listener and feeds it into the flow. The dashboard
route stays with the dashboard web page, which cannot bind a port.

tui_gateway/mcp_oauth_sessions.py had a second copy of the loopback listener and a
_worker that referenced _probe_with_rollback, set_hermes_home_override,
reset_hermes_home_override and Path without importing them, so every RPC-started
flow raised NameError. Both are deleted; start_flow spawns run_worker directly and
uses the same receiver picker. Flow registration is shared (register_flow /
finish_flow) so a card-started flow with a client URI is reachable by the relay.

Under an SSH session with no client listener the attempt's detail carries the
existing paste-the-redirect instructions. Nothing on the card path opens a browser.

* feat(desktop): setup-form modal for MCP connection cards

The connection card rendered an MCP server's setup fields inline: every field as a
password input, no default value, no instructions. A URL such as the n8n MCP
server URL was typed blind, and the manifest's setup text never reached the user.

Two components carry the form now. SetupFieldList renders the ordered fields the
backend declares (a plain field as text prefilled with the manifest default, a
secret field masked and empty). SetupFormDialog composes it with a one-line title,
the manifest instructions, an inline error for a failed attempt, and Cancel /
Connect. The row's Install action opens the dialog when the target has fields;
Connect sends {status: approved, env}; Cancel sends {status: skipped}. A failed
attempt keeps the dialog open with the draft intact. The draft lives in the dialog
component only; nothing reaches the store or the resume snapshot.

Once the backend publishes the authorization URL the dialog shows it as text with
an Open in browser button. Nothing opens a browser on a state change: the Try
again path on both cards used to open the re-minted link at once; it now waits for
the row's update frame and the user's click.

The store types gain the wire's secret, default, instructions and discoveryError
fields and normalise them; a connected target with discoveryError renders as
authorized with tools unavailable.

* feat(tui): connection card in the Ink TUI

The Ink TUI had no client for the connection operation: connection.request,
connection.update, connection.respond and the pending_connection resume snapshot
were unhandled, so a manage_connections call in a TUI session could only print a
link through the model.

connectionOperationStore.ts holds the backend snapshot: a request opens only for a
new operation id, an update applies only to the live operation with a higher seq,
a settled update freezes the id so a late request frame cannot reopen the card.
The gateway event handler feeds it; session resume hydrates it from
pending_connection.

connectionSetupOverlay.tsx renders one callout in the prompt zone: a one-line
title, the manifest instructions, every field (plain rows prefilled with the
default, secret rows masked), then a Connect / Cancel selector. Connect sends the
draft through connection.respond; Cancel skips the active target. When the backend
publishes the authorization URL the callout shows it as text under "Press Enter to
open in browser"; Enter is the only thing that opens it. A failed attempt unlocks
the fields with the draft kept. An accepted secret renders as "Set" and is never
echoed. A target authorized without tools shows that state and Continue.

The overlay joins the existing input-owner set in overlayStore so typing and other
prompts are blocked while it is up.

* feat(cli): connection panel in the classic CLI

The classic hermes CLI passed no connection_callback, so a manage_connections
call could only print an authorization link through the model and could not take
a setup value at all.

The CLI now renders the connection operation as a prompt_toolkit panel, on the
same queue mechanism as the clarify panel: the agent thread's callback opens the
panel, blocks until the first decision, then returns so the operation's watch loop
runs; every later state reaches the panel through ConnectionOperation.on_change
(installed only when no gateway hook is set, restored on close).

Panel: one-line title, the manifest instructions, one row per field (plain rows
prefilled with the default, secret rows masked in the input buffer and rendered as
"Set" once accepted), then Connect / Cancel. Connect sends the draft through
apply_answer; Esc skips the active target; Ctrl-C sets the tool-thread interrupt so
the operation settles as interrupted. Once the backend publishes the authorization
URL the panel shows it with the target detail and "Press Enter to open in browser";
Enter is the only thing that opens it. A failed attempt unlocks the fields with the
draft kept; an authorized target without tools offers Retry discovery / Continue.

Up/Down move between rows, Left/Right toggle the action, and the panel joins the
blocking-overlay guards so chat input, history and voice stay out while it is up.
The single-query (headless) mode passes no callback, as it does for clarify.

* feat(connectors): register a connected MCP server and report its tools in the result

After a successful install or authorization the target carried the probe's tool
names and the model was told the tools "become available on your next turn". MCP
tool schemas are deferrable by construction, so nothing about them lives in the
sent tool array; a server registered in the scoped registry is callable through
tool_describe/tool_call in the same turn. The operation now registers the server
(register_mcp_servers under the owner's home scope) once authorization is
committed, records the registered names on the target, and the settled result
carries a tools_listing block in the deferred-catalog format plus a note that the
tools are callable now. A registration failure keeps the target connected with
tools: [] and a sanitized discovery_error. agent.tools and the system prompt are
untouched; the between-turns refresh updates the catalog block as before.

The card gate no longer asks for the desktop platform. Every surface that renders
the card attaches a connection callback (Desktop, the Ink TUI, the classic CLI);
registry dispatch and messaging sessions attach none and keep the link result.

Pre-commit rollback in probe_with_rollback used restore(only_if_absent=True),
which skips the rollback when a token file exists. On a first-ever authorization
the only file is the one this attempt wrote, so a token the resource rejected was
kept. Live E2E (controlled provider answering 403 to the issued token) showed the
row fail and the token survive; the rollback now restores the snapshot outright,
and the same run shows the token file removed.

* fix(connectors): install an OAuth catalog entry through the card's own flow

The card's install ran install_entry and then a plain probe. For an OAuth entry
that probe has no card flow around it: in the desktop backend it failed at once
("non-interactive environment and no cached tokens"), and in the classic CLI it
saw a TTY, opened a browser by itself and drew install_entry's curses tool
checklist over the panel. Since a probe failure is now an error, the failed
install was rolled back with _remove_mcp_server, and authorize refuses a server
that is not configured. A clean home had no path to a connected OAuth entry, which
is 55 of the 65 catalog entries. Found by the live three-surface run.

An install now builds the entry's configuration in memory (card_install_config:
no prompts, no probe, no checklist; a prior tool selection or the manifest's
curated filter applies). An OAuth entry starts the same flow authorize uses with
that configuration and the setup values in the attempt's secret scope, so the row
reaches the URL step, and the configuration and the setup values are saved
together when initialize accepts the token. Every other entry is probed in memory
and saved after the server answers. A failure writes nothing, so a failed
reinstall keeps the previous configuration, and the failed row asks for its fields
again so the card can reopen the form over the draft it kept.

* fix(agent): make a server connected in this turn callable in this turn

tool_describe and tool_call resolve names inside the agent's toolset selection,
which is fixed when the agent is built. A server that manage_connections had just
registered was therefore "not found" for the rest of the turn whose result calls
its tools available, and stayed out of the next turn's catalog too. The live
Desktop run showed it: the result listed mcp__fx_oauth_fields__echo and the
tool_describe that followed answered not_found.

The executor now adds the MCP servers the call connected to the selection. Only
the selection changes; agent.tools does not, so the sent tool schema bytes stay
the same. A selection of None (every toolset) and the no_mcp sentinel are left
alone.

* fix(cli): reopen the connection form when a required field is still empty

When the backend refuses an answer because a required field is missing it keeps
the row pending and names the fields. The panel mapped that frame to its waiting
phase, which draws the detail line and nothing else, so the user saw "waiting for
FX_API_KEY" with no fields and no buttons until the 300 s deadline. The panel now
returns to the form on the first missing field, over the draft it kept.

* test(connectors): the no-card path is the one with no callback attached

The card gate is "a connection callback is attached" since the classic CLI got
its own panel. This test still attached one under platform "cli" and expected no
card, so it opened a real operation, waited out the 300 s deadline and failed.
It now drives the path that has no card: no callback.

* fix(connectors): order a cancel against the commit and stop deleting a working grant

Found by the live runs on Desktop, the Ink TUI and the classic CLI.

A user's skip did not stop the OAuth attempt. With the worker parked in the token
request, the row settled "skipped" and the token was written 33 s later. A skip
now cancels the attempt, and one lock orders that cancel against the commit: the
attempt is either canceled with the earlier tokens restored, or committed and
kept. When the commit won, the skipped row says the authorization was kept. An
interrupted turn cancels its attempts the same way.

Every attempt began by deleting the saved tokens, so retrying discovery for an
authorized server demanded consent again, and a cancel in between left no grant
at all. The card's flow now connects with the saved tokens first, with no browser
step; only when they do not work does it replace them. The RPC session surface
keeps the old behavior because its caller waits for an authorization URL.

A second Connect from the form a failed row reopened was dropped without a frame,
which left the Desktop dialog with Connect loading and Cancel disabled until the
deadline. An approval on a failed or expired row is now a retry with the new
values.

The reported tool names came from the registration call, which returns nothing
for a server the process already holds. A retry after a failed listing therefore
said "no tools" while the server had them. The names are read from the registry,
and a parked server is woken first.

An authorization that commits after its card closed by deadline was never
registered, so the next turn still could not reach it. The runner keeps such
attempts, and the between-turns refresh adopts the ones that were approved.

An error with no message reached the user as a class name ("CancelledError").
The tool description still said a server's tools arrive on the next turn.

* fix(desktop): let an OAuth install open its link, and keep the form's draft

An install of an OAuth catalog entry with no setup fields reached the URL step
and gave the user nothing to click: an initiated install was always drawn as a
disabled spinner, and the only other place the link is shown is the setup dialog,
which opens for entries with fields. That is most of the catalog. An initiated row
that carries a link now offers Open, whatever the action.

The setup dialog reset its draft whenever the field list changed identity. The
backend sends a fresh list with every frame and an empty one while an attempt
runs, so a failed Connect erased what the user had typed. Fields now only fill in
what the draft lacks, and closing the dialog drops the draft.

The settled summary dropped the "tools unavailable" fact, and the live row offered
a Try again for that state which the gateway refuses for a connected target. The
summary keeps the fact and the row offers no dead control.

* fix(tui): keep the typed draft when a Connect fails

The overlay reset its draft whenever required_env changed identity, and every
backend snapshot delivers a freshly parsed array. A failed Connect therefore came
back as a form with the default region and an empty secret. The draft now resets
per target only, and a snapshot's fields fill in what the draft lacks.

* fix(cli): show the URL step and start an install that has no fields

The panel applied the user's answer and then set its phase to "waiting". The
backend applies the answer on the same thread and its change hook had already set
the next phase, so the URL step of an OAuth install and the reopened form for a
missing field were both overwritten, and the card sat on "Waiting…" until the
deadline. The waiting phase is now set before the answer is applied.

A pending install or enable with no fields opened in the waiting phase, which
sends no approval, so the flow never started. It now opens on Connect/Cancel. A
target that already carries its link opens on the URL step.

Connect on a failed row re-ran the attempt without the values now in the draft; it
sends them. The authorized-without-tools phase offered a "Retry discovery" that a
connected target cannot run inside the same operation; it offers Continue.

* fix(connectors): a newer OAuth attempt replaces the older one for the same server

A card that closed by deadline leaves its worker waiting on the browser for up to
300 s, and a tampered callback leaves one waiting too. A retry or a new operation
for the same server then ran beside it: both wrote the same token files, and the
older one's rollback could write over the newer attempt's grant.

The newest attempt per home and server is recorded. Starting one cancels the older
attempt, takes over its pre-attempt snapshot so a later failure still restores the
state from before either, and the older attempt's rollback leaves the files alone.

* fix(desktop): label an install's link control "Open in browser"

The control that hands an install's authorization link to the browser reused the
action's verb, so the row showed "Install" before the click and "Install" again at
the link step, told apart only by the cue. It now reads "Open in browser", the
label the setup dialog already uses for the same act. Authorize keeps its verb.

* docs(mcp): describe the setup card on the desktop, the terminal UI and the CLI

The MCP guide said the chat install exists only in the desktop app and that the
CLI relays commands. All three surfaces now show the same card: fields, Connect or
Cancel, an authorization link the user opens, one save when the server has
accepted the token, and tools the agent can call in the same turn. The tools
reference gains the result fields (tools, tools_listing, discovery_error) and the
no-card behavior of an OAuth install.

* fix(cli): keep the layout hook callable without a connection widget

The CLI panel commit added connection_widget to _build_tui_layout_children as a
required keyword. That method is the documented override point for wrappers, and
five existing tests (extension hooks, prompt stash, subagent dock) call it without
the new argument, so CI failed with a TypeError. The argument is now optional, like
the other widgets added after the hook was published; a missing widget is left out
of the layout.

The settled tool result also carried the target's setup instructions. Those are
the card's text for the user, and a catalog entry's notes can predate this flow
("restart your session so the tools are loaded"), which contradicts a result that
says the tools are callable now. The model-facing result drops them; the card
payloads keep them. This restores test_connector_local_batches.

* fix(connectors): wait for an in-progress registration before reporting a server's tools

Found with the real Vercel MCP server. Saving the configuration wakes the config
watcher, which starts its own connect for the new server. The operation's
registration call then skips the server as "already connecting" and returns at
once, so the card settled "connected" with no tools, and the 214 tools were
registered three seconds later. With no names in the result the model searched,
found the hosted connector of the same vendor and asked the user to connect that
instead.

The registered names are now read once the registration has finished: while
another task is connecting the server the read waits (30 s at most), a parked
server is woken once, and a server that finished registering with no tools is
still a valid empty list.
2026-09-21 10:04:32 +05:30
..

Hermes TUI

React + Ink terminal UI for Hermes. TypeScript owns the screen. Python owns sessions, tools, model calls, and most command logic.

hermes --tui

What runs

The client entrypoint is src/entry.tsx. It exits early if stdin is not a TTY, starts GatewayClient, then renders App.

GatewayClient spawns:

python -m tui_gateway.entry

Interpreter resolution order is: HERMES_PYTHON → PYTHON → $VIRTUAL_ENV/bin/python → ./.venv/bin/python → ./venv/bin/python → python3 (or python on Windows).

The transport is newline-delimited JSON-RPC over stdio:

ui-tui/src                  tui_gateway/
-----------                 -------------
entry.tsx                   entry.py
  -> GatewayClient            -> request loop
  -> App                      -> server.py RPC handlers

stdin/stdout: JSON-RPC requests, responses, events
stderr: captured into an in-memory log ring

Malformed stdout lines are treated as protocol noise and surfaced as gateway.protocol_error. Stderr lines become gateway.stderr. Neither writes directly into the terminal.

Running it

From the repo root, the normal path is:

hermes --tui

The CLI expects ui-tui/dist/entry.js to exist, or the whole source code available in which to run npm install and npm run dev.

cd ui-tui
npm install

Local package commands:

npm run dev
npm start
npm run build
npm run lint
npm run fmt
npm run fix

Tests use vitest:

npm test         # single run
npm run test:watch

Live agents

The dock above the composer appears automatically while children are running. It shows actual live-child counts, task names, elapsed time, and the latest activity. Its row budget shrinks on short terminals; finished work remains in the existing /agents / /replay history rather than permanently occupying composer space. Async completion units are not counted as extra agents.

  • Ctrl+T expands the roster without clearing your draft; Esc returns.
  • ↑/↓ selects an agent, Enter opens its details (tools, output, files, usage).
  • t opens its bounded live transcript tail; g/G moves to top/bottom.
  • e opens a separate steering form. Enter queues guidance and Esc returns. “Queued” means accepted for the next tool boundary, not confirmed delivery.
  • x requests that the selected child stop; X requests a subtree stop.
  • Existing sort/filter, spawn-pause, timeline, and replay controls remain available.

The roster hydrates from the session-scoped subagent.list RPC alongside streamed events. Only an open tail view polls subagent.tail; steering uses the existing subagent.steer RPC. No model tool schema or prompt-caching behavior changes.

App model

src/app.tsx is the center of the UI. Heavy logic is split into src/app/:

  • src/app/createGatewayEventHandler.ts — maps gateway events to state updates
  • src/app/createSlashHandler.ts — local slash command dispatch
  • src/app/useComposerState.ts — draft, multiline buffer, queue editing
  • src/app/useInputHandlers.ts — keypress routing
  • src/app/useMainApp.ts — top-level composition hook: wires all sub-hooks, manages transcript history, session polling, and exposes props consumed by app.tsx
  • src/app/useSessionLifecycle.ts — session create / resume / activate / close and visible-history reset
  • src/app/useSubmission.ts — message send, shell exec (!cmd), inline interpolation ({!cmd}), and busy-input-mode dispatch (queue / steer / interrupt)
  • src/app/turnController.ts — stateful class that drives the turn lifecycle: buffers streaming deltas, manages tool/reasoning state, handles interrupt and message-complete transitions
  • src/app/turnStore.ts — nanostore for turn state (streaming text, tools, reasoning, subagents, todos, activity trail)
  • src/app/useConfigSync.ts — fetches config.get full on session start and polls config mtime every 5 s; applies display settings and triggers MCP reload on change
  • src/app/useLongRunToolCharms.ts — fires ambient activity messages for tools running longer than 8 s
  • src/app/overlayStore.ts / src/app/uiStore.ts — nanostores for overlay and UI state
  • src/app/delegationStore.ts — nanostore for subagent spawning caps and overlay accordion state
  • src/app/spawnHistoryStore.ts — in-memory ring (last 10) of finished subagent fan-out snapshots; populated at turn end for /replay
  • src/app/inputSelectionStore.ts — nanostore exposing the active text-input selection handle
  • src/app/gatewayContext.tsx — React context for the gateway client
  • src/app/gatewayRecovery.ts — pure function that decides whether to respawn and resume after a gateway crash, with a 3-attempt / 60 s budget
  • src/app/setupHandoff.ts — launches external hermes setup, suspends Ink while it runs, opens a new session on success
  • src/app/scroll.ts — scrolls the viewport while keeping the text selection anchor in sync
  • src/app/interfaces.ts — internal interfaces (ComposerActions, GatewayRpc, etc.)

Slash command subsystem (src/app/slash/)

  • types.ts — SlashCommand interface and SlashRunCtx execution context (gateway rpc, transcript helpers, session refs, stale-guard)
  • registry.ts — assembles SLASH_COMMANDS from all command files in registration order (core → billing → credits → session → ops → setup → debug) and exposes findSlashCommand(name) for case-insensitive lookup
  • commands/core.ts — general TUI commands
  • commands/billing.ts — /billing: manage Nous remote spending — buy credits, auto-reload, limits
  • commands/credits.ts — /credits
  • commands/session.ts — session and agent commands
  • commands/ops.ts — operations commands
  • commands/setup.ts — /setup
  • commands/debug.ts — /heapdump, /mem

The top-level app.tsx composes these into the Ink tree with Static transcript output, a live streaming assistant row, prompt overlays, queue preview, status rule, input line, and completion list.

State managed at the top level includes:

  • transcript and streaming state
  • queued messages and input history
  • session lifecycle
  • tool progress and reasoning text
  • prompt flows for approval, clarify, sudo, and secret input
  • slash command routing
  • tab completion and path completion
  • theme state from gateway skin data

The UI renders as a normal Ink tree with Static transcript output, a live streaming assistant row, prompt overlays, queue preview, status rule, input line, and completion list.

The intro panel is driven by session.info and rendered through branding.tsx.

Hotkeys and interactions

Current input behavior is split across app.tsx, components/textInput.tsx, and the prompt/picker components.

Main chat input

Key Behavior
Enter Submit the current draft
empty Enter twice If queued messages exist and the agent is busy, interrupt the current run. If queued messages exist and the agent is idle, send the next queued message
Shift+Enter / Alt+Enter Insert a newline in the current draft
\ + Enter Append the line to the multiline buffer (fallback for terminals without modifier support)
Ctrl+C Interrupt active run, or clear the current draft, or exit if nothing is pending
Ctrl+D Exit
Cmd/Ctrl+G / Alt+G Open $EDITOR with the current draft (use Alt+G in VSCode/Cursor — they bind the primary keystroke to Find Next)
Ctrl+L New session (same as /clear)
Ctrl+V / Alt+V Paste text first, then fall back to image/path attachment when applicable
Tab Apply the active completion
Up/Down Cycle completions if the completion list is open; otherwise edit queued messages first, then walk input history
Left/Right Move the cursor
modified Left/Right Move by word when the terminal sends Ctrl or Meta with the arrow key
Home / Ctrl+A Start of line
End / Ctrl+E End of line
Backspace Delete the character to the left of the cursor
Delete Delete the character to the right of the cursor
modified Backspace Delete the previous word
modified Delete Delete the next word
Ctrl+W Delete the previous word
Ctrl+U Delete from the cursor back to the start of the line
Ctrl+K Delete from the cursor to the end of the line
Meta+B / Meta+F Move by word
!cmd Run a shell command through the gateway
{!cmd} Inline shell interpolation before send; queued drafts keep the raw text until they are sent

Notes:

  • Tab only applies completions when completions are present and you are not in multiline mode.
  • Queue/history navigation only applies when you are not in multiline mode.
  • PgUp / PgDn are left to the terminal emulator; the TUI does not handle them.

Prompt and picker modes

Context Keys Behavior
approval prompt Up/Down, Enter Move and confirm the selected approval choice
approval prompt o, s, a, d Quick-pick once, session, always, deny
approval prompt Esc, Ctrl+C Deny
clarify prompt with choices Up/Down, Enter Move and confirm the selected choice
clarify prompt with choices single-digit number Quick-pick the matching numbered choice
clarify prompt with choices Enter on "Other" Switch into free-text entry
clarify free-text mode Enter Submit typed answer
sudo / secret prompt Enter Submit typed value
sudo / secret prompt Ctrl+C Cancel by sending an empty response
resume picker Up/Down, Enter Move and resume the selected session
resume picker 1-9 Quick-pick one of the first nine visible sessions
resume picker Esc, Ctrl+C Close the picker

Notes:

  • Clarify free-text mode and masked prompts use ink-text-input, so text editing there follows the library's default bindings rather than components/textInput.tsx.
  • When a blocking prompt is open, the main chat input hotkeys are suspended.
  • Clarify mode has no dedicated cancel shortcut in the current client. Sudo and secret prompts only expose Ctrl+C cancellation from the app-level blocked handler.

Interaction rules

  • Plain text entered while the agent is busy is queued instead of sent immediately.
  • Slash commands and !cmd do not queue; they execute immediately even while a run is active.
  • Queue auto-drains after each assistant response, unless a queued item is currently being edited.
  • Up/Down prioritizes queued-message editing over history. History only activates when there is no queue to edit.
  • Queued drafts keep their original !cmd and {!cmd} text while you edit them. Shell commands and interpolation run when the queued item is actually sent.
  • If you load a queued item into the input and resubmit plain text, that queue item is replaced, removed from the queue preview, and promoted to send next. If the agent is still busy, the edited item is moved to the front of the queue and sent after the current run completes.
  • Completion requests are debounced by 60 ms. Input starting with / uses complete.slash. A trailing token that starts with ./, ../, ~/, /, or @ uses complete.path.
  • Text pastes are inserted inline directly into the draft. Nothing is newline-flattened.
  • Cmd/Ctrl+G (or Alt+G in VSCode/Cursor, which intercept the primary keystroke for Find Next) writes the current draft, including any multiline buffer, to a temp file, suspends Ink, launches $EDITOR, then restores the TUI and submits the saved text if the editor exits cleanly.
  • Input history is stored in ~/.hermes/.hermes_history or under HERMES_HOME.

Rendering

Assistant output is rendered in one of two ways:

  • if the payload already contains ANSI, messageLine.tsx prints it directly
  • otherwise components/markdown.tsx renders a small Markdown subset into Ink components

The Markdown renderer handles headings, lists, block quotes, tables, fenced code blocks, diff coloring, inline code, emphasis, links, and plain URLs.

Tool/status activity is shown in a live activity lane. Transcript rows stay focused on user/assistant turns.

Prompt flows

The Python gateway can pause the main loop and ask the client a question. These are JSON-RPC requests from the server (string id, answered with a response frame of the same id — see createServerRequestHandler.ts), not events:

  • approval: allow once, allow for session, allow always, or deny → { choice }
  • clarify: pick from choices or type a custom answer → { answer } (batch: { answers })
  • sudo: masked password entry → { value }
  • secret: masked value entry for a named env var → { value }
  • session.list: used by SessionPicker for /resume

A withdrawn question (timeout, interrupt) arrives as a request.cancel event carrying its id.

These are stateful UI branches in app.tsx, not separate screens.

Commands

The following commands are handled directly by the TUI client. Unrecognized commands fall through to the Python gateway via slash.exec and command.dispatch.

Core (core.ts)

/help, /quit (alias /exit), /update, /clear (alias /new), /density, /copy, /paste, /details (alias /detail), /statusbar (alias /sb), /queue (alias /q), /logs, /history, /save, /undo, /retry, /steer, /mouse (alias /scroll), /status, /title, /fortune, /redraw, /terminal-setup

Billing (billing.ts)

/billing — manage Nous remote spending — buy credits, auto-reload, limits

Session (session.ts)

/model, /sessions (aliases /switch, /session, /resume), /bg, /btw, /image, /personality, /compress, /branch (alias /fork), /voice, /skin, /indicator, /yolo, /reasoning, /fast, /busy, /verbose, /usage

Ops (ops.ts)

/stop, /reload-mcp (alias /reload_mcp), /reload, /browser, /rollback, /agents (alias /tasks), /replay, /replay-diff, /skills, /reload-skills (alias /reload_skills), /plugins, /tools

Credits (credits.ts)

/credits — Nous credit balance and browser top-up

Setup (setup.ts)

/setup — launches external hermes setup wizard, suspends Ink while it runs

Debug (debug.ts)

/heapdump, /mem — V8 memory diagnostics


Anything not matched above falls through to:

  1. slash.exec
  2. command.dispatch

That lets Python own aliases, plugins, skills, and registry-backed commands without duplicating the logic in the TUI.

Event surface

Primary event types the client handles today:

Event Payload
gateway.ready { skin? }
skin.changed { skin }
session.info session metadata for banner + tool/skill panels
message.start start assistant streaming
message.delta { text, rendered? }
message.complete { text, rendered?, usage, status }
thinking.delta { text }
reasoning.delta { text, verbose? }
reasoning.available { text, verbose? }
status.update { kind, text }
notification.show { id, key, kind, level, text, ttl_ms? }
notification.clear { key }
tool.start { tool_id, name, context?, args_text? }
tool.generating { name }
tool.progress { name, preview }
tool.complete { tool_id, name, error?, summary?, duration_s?, inline_diff?, todos? }
request.cancel { id, method, reason } clears the withdrawn server→client request
background.complete { task_id, text }
billing.step_up.verification { verification_url, user_code }
review.summary { text }
browser.progress { message }
voice.status { state }
voice.transcript { text, no_speech_limit? }
subagent.spawn_requested { subagent_id?, task_index, goal?, depth?, parent_id? }
subagent.start { subagent_id?, task_index, goal?, depth?, parent_id? }
subagent.thinking { text }
subagent.tool { tool_name?, tool_preview?, text? }
subagent.progress { text }
subagent.complete { status, summary?, text?, duration_seconds? }
error { message }
gateway.stderr synthesized from child stderr
gateway.protocol_error synthesized from malformed stdout
gateway.start_timeout { cwd?, python?, stderr_tail? }

Theme model

The client starts with DEFAULT_THEME from theme.ts, then merges in gateway skin data from gateway.ready.

Current branding overrides:

  • agent name
  • prompt symbol
  • welcome text
  • goodbye text

Current color overrides:

  • banner title, accent, border, body, dim
  • label, ok, error, warn

branding.tsx uses those values for the logo, session panel, and update notice.

File map

ui-tui/
  packages/hermes-ink/   forked Ink renderer (local dep)
  src/
    entry.tsx            TTY gate + render()
    app.tsx              top-level Ink tree, composes src/app/*
    gatewayClient.ts     child process + JSON-RPC bridge
    gatewayTypes.ts      gateway event and RPC response type definitions
    theme.ts             theme colors and skin merge
    banner.ts            ASCII art renderer (parses Rich color tags)
    types.ts             shared client-side types (ActiveTool, Msg, etc.)

    app/
      createGatewayEventHandler.ts  event → state mapping
      createSlashHandler.ts         local slash dispatch
      delegationStore.ts            nanostore for subagent spawning caps and overlay accordion state
      gatewayContext.tsx            React context for gateway client
      gatewayRecovery.ts            crash-recovery budget: respawn+resume capped to 3 attempts / 60 s
      inputSelectionStore.ts        nanostore exposing the active text-input selection handle
      interfaces.ts                 internal interfaces (ComposerActions, GatewayRpc, etc.)
      overlayStore.ts               nanostores for overlay state
      scroll.ts                     viewport scroll with text-selection anchor sync
      setupHandoff.ts               launches external hermes setup, suspends Ink while it runs
      spawnHistoryStore.ts          ring buffer of finished subagent fan-out snapshots
      turnController.ts             stateful turn lifecycle driver (streaming, tools, reasoning)
      turnStore.ts                  nanostore for turn state (streaming, tools, reasoning, subagents)
      uiStore.ts                    nanostores for UI flags (busy, sid, mouseTracking, etc.)
      useComposerState.ts           draft + multiline buffer + queue editing
      useConfigSync.ts              config polling and MCP reload on mtime change
      useInputHandlers.ts           keypress routing
      useLongRunToolCharms.ts       ambient activity messages for tools running longer than 8 s
      useMainApp.ts                 top-level composition hook
      useSessionLifecycle.ts        session create / resume / activate / close
      useSubmission.ts              message send, shell exec, interpolation, busy-input-mode dispatch

      slash/
        types.ts                    SlashCommand interface and SlashRunCtx execution context
        registry.ts                 SLASH_COMMANDS assembly and findSlashCommand lookup
        commands/
          billing.ts                /billing — manage Nous remote spending
          core.ts                   general TUI commands
          credits.ts                /credits
          debug.ts                  /heapdump, /mem
          ops.ts                    operations commands
          session.ts                session and agent commands
          setup.ts                  /setup wizard

    components/
      activeSessionSwitcher.tsx  active session switch overlay
      agentsOverlay.tsx          subagent delegation overlay
      appChrome.tsx              status bar, input row, completions
      appLayout.tsx              top-level layout composition
      appOverlays.tsx            overlay routing (pickers, prompts)
      billingOverlay.tsx         billing overlay
      branding.tsx               banner + session summary
      fpsOverlay.tsx             FPS debug overlay
      helpHint.tsx               contextual help hint
      markdown.tsx               Markdown-to-Ink renderer
      maskedPrompt.tsx           masked input for sudo / secrets
      messageLine.tsx            transcript rows
      modelPicker.tsx            model switch picker
      overlayControls.tsx        shared overlay control buttons
      pluginsHub.tsx             plugins hub overlay
      prompts.tsx                approval + clarify flows
      queuedMessages.tsx         queued input preview
      skillsHub.tsx              skills hub overlay
      streamingAssistant.tsx     live streaming assistant row
      streamingMarkdown.tsx      streaming Markdown renderer
      textInput.tsx              custom line editor
      themed.tsx                 theme-aware wrapper
      thinking.tsx               spinner, reasoning, tool activity
      todoPanel.tsx              todo list panel

    config/
      env.ts                     environment variable resolution and Termux/mouse defaults
      limits.ts                  paste size, live-render and history limits
      timing.ts                  streaming batch and debounce timing constants

    content/
      charms.ts                  ambient activity strings for long-running tools
      faces.ts                   agent face / kaomoji pool
      fortunes.ts                /fortune quote pool
      hotkeys.ts                 platform-aware hotkey display strings
      placeholders.ts            rotating input placeholder strings
      setup.ts                   setup-required panel content
      verbs.ts                   tool activity verb map (browser → browsing, etc.)

    domain/
      blockLayout.ts             block layout and lead-gap helpers
      details.ts                 details visibility mode resolution (hidden/collapsed/expanded)
      messages.ts                message formatting and transcript helpers
      paths.ts                   cwd shortening and path display helpers
      providers.ts               provider display name helpers
      roles.ts                   message role color and label helpers
      slash.ts                   slash command parsing and TUI session model flag
      usage.ts                   token usage zero value and helpers
      viewport.ts                viewport height estimation helpers

    hooks/
      useCompletion.ts           tab completion (slash + path)
      useGitBranch.ts            current git branch via child_process execFile
      useInputHistory.ts         persistent history navigation
      useQueue.ts                queued message management
      useVirtualHistory.ts       virtual list scroll and height tracking

    lib/
      circularBuffer.ts          fixed-size generic ring buffer
      clipboard.ts               clipboard read / write via child_process
      editor.ts                  $EDITOR launch, PATH resolution, and Ink suspend
      emoji.ts                   emoji and variation selector width helpers
      externalCli.ts             external CLI subprocess launcher
      externalLink.ts            open URLs in the system browser
      forceTruecolor.ts          24-bit truecolor override before chalk imports
      fpsStore.ts                Ink frame FPS tracker nanostore
      fuzzy.ts                   lightweight fuzzy subsequence scorer
      gracefulExit.ts            clean shutdown with failsafe timeout
      history.ts                 persistent input history (read/append to disk)
      inputMetrics.ts            input width and wrap metrics
      liveProgress.ts            todo helpers and tool-shelf message assembly
      mathUnicode.ts             best-effort LaTeX → Unicode for inline math
      memory.ts                  V8 heap snapshot and diagnostics helpers
      memoryMonitor.ts           automatic heap-dump trigger on high usage
      messages.ts                transcript message append helpers
      openExternalUrl.ts         platform-aware URL opener (macOS/Linux/Windows)
      osc52.ts                   OSC 52 terminal clipboard copy sequence
      parentLog.ts               append-only log to ~/.hermes/tui-parent.log
      perfPane.tsx               FPS / render perf overlay pane
      platform.ts                platform-aware keybinding and SSH detection helpers
      precisionWheel.ts          high-precision scroll wheel with sticky-frame budget
      prompt.ts                  composer prompt text helpers (Termux-safe)
      reasoning.ts               reasoning tag detection and split helpers
      rpc.ts                     JSON-RPC result and command dispatch helpers
      subagentTree.ts            subagent tree flattening and aggregate helpers
      syntax.ts                  syntax token types and theme-aware highlighting
      terminalModes.ts           terminal mode reset sequences (kitty, mouse, etc.)
      terminalParity.ts          VSCode-like terminal detection and hint helpers
      terminalSetup.ts           IDE keybinding config file install helpers
      termux.ts                  Termux platform detection helpers
      text.ts                    text helpers, ANSI detection, tool trail builders
      todo.ts                    todo item tone and display helpers
      viewportStore.ts           viewport height nanostore via ScrollBoxHandle
      virtualHeights.ts          virtual list row height estimation
      wheelAccel.ts              scroll wheel acceleration state machine

    protocol/
      interpolation.ts           {!cmd} inline shell interpolation regex and helpers
      paste.ts                   bracketed paste snippet token regex

    types/
      hermes-ink.d.ts            type declarations for @hermes/ink

    __tests__/                   vitest suite

Related Python side:

tui_gateway/
  entry.py               stdio entrypoint
  server.py              RPC handlers and session logic
  render.py              optional rich/ANSI bridge
  slash_worker.py        persistent HermesCLI subprocess for slash commands