OpenCode: no explicit post-compaction re-injection of workflow bootstrap

[cinvymoe]

Summary

The OpenCode plugin (.opencode/plugins/spec-superflow.js) has no dedicated handling for OpenCode's context compaction. After compaction, recovery of the <EXTREMELY_IMPORTANT> bootstrap only happens as an accidental side effect of the experimental.chat.messages.transform dedup check — not by design.

Current behavior

The plugin registers two hooks:

1. config — registers the skills directory.
2. experimental.chat.messages.transform — prepends the bootstrap (GEMINI.md wrapped in <EXTREMELY_IMPORTANT>) to the first user message, guarded by a dedup check:

if (firstUser.parts.some(p => p.type === 'text' && p.text.includes('EXTREMELY_IMPORTANT'))) return;

After OpenCode compacts the session, the message history is replaced by a summary. The first "user" message (the compaction summary) no longer contains EXTREMELY_IMPORTANT, so the dedup check fails and the bootstrap is silently re-injected on the next message send.

Problems

1. Timing: re-injection happens on the next outgoing message, not at compaction time — the first post-compaction model turn runs without the bootstrap context.
2. Fragility: it depends on the compaction summary never containing the literal string EXTREMELY_IMPORTANT. If a future OpenCode version includes prior context in the summary, re-injection silently stops.
3. Undocumented: a repo-wide search for compacting / compaction finds nothing — this behavior is an emergent side effect, not a tested contract.

Suggestion

Add an explicit experimental.session.compacting hook that appends the bootstrap to output.context, e.g.:

'experimental.session.compacting': async (_input, output) => {
  const bootstrap = getBootstrapContent();
  if (!bootstrap) return;
  output.context.push(bootstrap);
},

This guarantees the workflow bootstrap survives compaction deterministically, at the moment compaction happens.

Environment

• spec-superflow version: current main (v0.10.0)
• Platform: OpenCode

[cinvymoe]

Superseded by bilingual version / 已由中英文版本替代

[cinvymoe]

Superseded by bilingual version: #69 / 已由中英文版本替代:#69