Individual skill

ccf-common

Required shared preflight for every CCFA skill after ccf-humanization: apply routing, scope, prerequisites, evidence rules, handoffs, and artifact contracts. Also maintain and audit these shared rules. Research deliverables remain with their specialist owners.

ccf-common/SKILL.md

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# CCF Common

## Required Shared Preflight

First apply [ccf-humanization](../ccf-humanization/SKILL.md), then this entry, before every CCFA specialist. Bootstrap once; reuse applicable active rules across contributors and restore missing or changed rules. Discovery metadata or a named preflight is not proof that its instructions were read. Ordinary work needs no startup report, intake form, state file, or maintenance workflow.

Resolve the requested result, scope/permissions, integrating owner, and reusable or missing prerequisites. Current user instructions override defaults. Preserve plan-only, review-only, supplied-evidence-only, no-browsing, no-new-files, exact-output, and session-denylist constraints. Necessary local steps and specialist contributions remain authorized within the requested deliverable; do not re-ask solely because ownership changes.

Use one integrating owner, bring in the specialist needed to resolve a material gap, and verify affected results before finalizing. Reuse valid evidence rather than repeating intake, searches, full reports, or model calls. Do not skip groundwork to save tokens. A specialist remains responsible for its research deliverable; Common supplies shared controls.

## Preferences And Continuity

Resolve optional preferences once with `python <ccf-common>/scripts/preferences.py resolve`, adding `--project <established-root>` when known. Reuse the compact result at handoffs. Missing files mean defaults with no write or question. Read [preferences.md](references/preferences.md) only for a relevant trigger, configuration change, resolver error, or unavailable Python. Preferences govern optional enhancements and marked draft modes, not preflights, accuracy, requested scope, model selection, or host permissions.
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