Thin the always-injected Mosaic contract back to a "core + on-demand guides" shape:
defaults/AGENTS.md -> thin core (12 hard gates verbatim; 37 operating rules condensed to ~15 bullets pointing at guides/E2E-DELIVERY.md; Superpowers condensed; load order made on-demand instead of "read everything up front").
defaults/TOOLS.md -> index; full catalog preserved in NEW guides/TOOLS-REFERENCE.md (read on demand).
Composed AGENTS+TOOLS+RUNTIME: 8,827 -> 4,122 tok (minus 53 percent), re-fed every turn. AGENTS/TOOLS are shared across runtimes, so the diet benefits codex/pi/opencode too.
Validation
Gate-checklist (deterministic): all 12 hard gates + critical rules + mode lines + sequential-thinking + OpenBrain + Superpowers present.
Functional A/B (headless interactive, subscription): thin 7/9 vs monolith 5/9 probes; strictly better on deploy/review/simple-task; no gate lost.
Method: autoresearch-style keep-or-discard loop (token cost gated by per-probe fidelity). Full evidence in scratchpads/contract-thin-core.md.
Scope / caveats
Diet-only against this repo's current content. No behavioral change; nothing imported from drifted deployments.
The canonical repo is BEHIND some live deployments (Gate 13-15, federated memory, OpenViking). Intentionally NOT addressed here; separate reconciliation.
p11 (don't-stop-at-PR) probe dips 3 to 2/3 on one rubric line: verified a scorer/phrasing artifact (answer correctly cites gates 5/9 + close-issue; gate verbatim-present).
Generated with Claude Code.
Closes #528.
## What
Thin the always-injected Mosaic contract back to a "core + on-demand guides" shape:
- defaults/AGENTS.md -> thin core (12 hard gates verbatim; 37 operating rules condensed to ~15 bullets pointing at guides/E2E-DELIVERY.md; Superpowers condensed; load order made on-demand instead of "read everything up front").
- defaults/TOOLS.md -> index; full catalog preserved in NEW guides/TOOLS-REFERENCE.md (read on demand).
- runtime/claude/RUNTIME.md -> slimmed (dedup tier table, terser pointers).
## Result
Composed AGENTS+TOOLS+RUNTIME: 8,827 -> 4,122 tok (minus 53 percent), re-fed every turn. AGENTS/TOOLS are shared across runtimes, so the diet benefits codex/pi/opencode too.
## Validation
- Gate-checklist (deterministic): all 12 hard gates + critical rules + mode lines + sequential-thinking + OpenBrain + Superpowers present.
- Functional A/B (headless interactive, subscription): thin 7/9 vs monolith 5/9 probes; strictly better on deploy/review/simple-task; no gate lost.
- Method: autoresearch-style keep-or-discard loop (token cost gated by per-probe fidelity). Full evidence in scratchpads/contract-thin-core.md.
## Scope / caveats
- Diet-only against this repo's current content. No behavioral change; nothing imported from drifted deployments.
- The canonical repo is BEHIND some live deployments (Gate 13-15, federated memory, OpenViking). Intentionally NOT addressed here; separate reconciliation.
- p11 (don't-stop-at-PR) probe dips 3 to 2/3 on one rubric line: verified a scorer/phrasing artifact (answer correctly cites gates 5/9 + close-issue; gate verbatim-present).
Generated with Claude Code.
Thin defaults/AGENTS.md + defaults/TOOLS.md + runtime/claude/RUNTIME.md to a core
that references guides on demand; preserve the full tool catalog in new
guides/TOOLS-REFERENCE.md. All 12 hard gates verbatim; validated via a deterministic
gate-checklist + a 9-probe headless A/B (thin 7/9 vs monolith 5/9). Composed
AGENTS+TOOLS+RUNTIME 8,827->4,122 tok. Diet-only against repo content; no behavioral
change, nothing imported from drifted deployments.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
format:check (prettier on **/*.md) flagged the hand-written tables/wrapping in the
thinned contract files. No content change — formatting only.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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Closes #528.
What
Thin the always-injected Mosaic contract back to a "core + on-demand guides" shape:
Result
Composed AGENTS+TOOLS+RUNTIME: 8,827 -> 4,122 tok (minus 53 percent), re-fed every turn. AGENTS/TOOLS are shared across runtimes, so the diet benefits codex/pi/opencode too.
Validation
Scope / caveats
Generated with Claude Code.