Module assembler 

Stateless context assembler.

ContextAssembler gathers all memory-sourced context for a single agent turn by running all async fetch operations concurrently. It takes only borrowed references via ContextAssemblyInput and returns a PreparedContext ready for injection.

Invariants:

• No Agent field mutations inside gather().
• No channel communication inside gather().
• All send_status calls remain in Agent::prepare_context.
• session_digest is cached (not async) and stays in Agent::apply_prepared_context.

Structs

ContextAssembler

Stateless coordinator for parallel context fetching.

PreparedContext

Result of one context-assembly pass.

Constants

CORRECTIONS_PREFIX

Prefix for past-correction injections.

CROSS_SESSION_PREFIX

Prefix for cross-session context injections.

DOCUMENT_RAG_PREFIX

Prefix for document RAG injections.

GRAPH_FACTS_PREFIX

Prefix for knowledge graph fact injections.

MAX_KEEP_TAIL_SCAN

Maximum number of messages scanned backward by memory_first_keep_tail before stopping at the next non-ToolResult boundary, to avoid O(N) scans on long sessions.

RECALL_PREFIX

Prefix for semantic recall injections.

SUMMARY_PREFIX

Prefix for past-session summary injections.

Functions

effective_recall_timeout_ms

Clamp recall timeout to a safe minimum.

memory_first_keep_tail

Compute how many tail messages to keep when the MemoryFirst strategy is active.