Module continuity 

Continuation packet (SPEC_DURABLE_CONVERSATION_MEMORY_2026_09_23.md §4.4, deterministic form). When a pane shows prior history but its process starts fresh — the provider can’t resume it, e.g. after an account switch — the first user message carries AgentMux’s own record of the conversation, so the model continues instead of starting blind.

Structs

RunningState 🔒

AgentMux’s running summary of the whole conversation (continuity_state.rs): its text, and when it was written.

Enums

Turn 🔒

Constants

MAX_IDENTIFIERS 🔒

Most identifiers the packet lists.

MAX_IDENTIFIER_CHARS 🔒

Longer tokens are prose or data, not identifiers.

PACKET_BUDGET_CHARS 🔒

PACKET_CLOSE 🔒

PACKET_OPEN 🔒

PACKET_TAIL_BYTES 🔒

How much of the pane’s transcript to read. Streaming deltas are ~90% of its bytes, so a busy agent needs megabytes to cover a few exchanges.

TURN_CAP_CHARS 🔒

Functions

build_continuation_packet 🔒

The packet for a transcript tail, or None when it holds no user message to continue from. state, when the agent has one, goes first: it covers what happened before the verbatim tail begins (§4.4: state first, tail last).

cap 🔒

capped_turn_text 🔒

text redacted, then cut to TURN_CAP_CHARS. In that order: a cut through a secret could leave a fragment too short for redact_secrets to recognize (ReAgent P1 on #3673).

defuse_delimiters 🔒

History text with the packet’s tag name defused (any case), so quoted content can’t open or close the packet and escape its “this is history” framing. U+2011 (non-breaking hyphen) keeps it readable.

identifier 🔒

token as an identifier, or None when it isn’t one.

identifiers 🔒

PR and issue numbers, URLs, file paths and commit ids from the record, deduplicated and newest first (§4.4: “exact identifiers survive verbatim … extracted deterministically … not paraphrased by the summarizer”). The running summary sometimes attaches the right commit to the wrong PR; this list is what it can be checked against. Extracted from redacted text, so a credential inside a URL never makes the list.

is_relayed 🔒

A message another agent relayed through the bus, not one a person typed.

prefix_user_message 🔒

line (one stream-json stdin envelope) with packet placed ahead of its content, when it is a user message; None for anything else (control responses must pass through untouched).

render 🔒

tool_summary 🔒

turns_from_stream 🔒

The record’s user and assistant turns, oldest first. Tool output is left out (it can be huge and replaying it is an injection surface); hidden memory-reinjection turns and the model’s replies to them are skipped, the same way the pane hides them.

user_text 🔒

A typed message’s text: AgentMux stores it as a string; the CLI’s own frames use block arrays. A block array with no text is a tool-result frame, not something a person typed.