Module session_start 

spool hook session-start — emit a wakeup packet at session start.

Output contract

• stdout: a textual prompt block, prefixed by an HTML comment marker so consumers can locate / strip the spool region.
• exit 0: always (failure is handled by [run_silent] in mod.rs).

Behavior modes

• Trellis-aware degraded mode (D6): when <cwd>/.trellis/.developer exists we emit a single-line note pointing to spool memory wakeup instead of the full packet. This avoids two assistants both pushing their own wakeup blob into the system prompt.
• Empty wakeup: when the project has no wakeup-ready memories, we still emit a minimal block so Claude Code knows the hook is wired (vs silently doing nothing — confusing during onboarding).

What we deliberately do NOT do here

• Network calls or sampling. SessionStart must finish in <500ms.
• Mutating ledger state. SessionStart is read-only.

Structs

SessionStartArgs

Arguments for the session-start hook.

Functions

run