plastic-intent-speccing

# Intent Speccing Consolidate the enriched Why into `spec.md` through eight fixed steps, one action per step. The next action is never a judgment call: when a section cannot be filled from what is on record, step 5 is to stop and ask, never invent. ## Precondition Run only when the active intent is at Why (its `## Intent` and enriched `## Context` plus `### Decisions` exist, `spec.md` does not yet exist or is being redone) and the user has asked to consolidate that Why into the spec. If no intent is active, or the active intent is not at Why, report that and stop; do not guess which intent is meant. ## The 8-step sequence | Step | Action | |---|---| | 1 | Confirm the precondition above. | | 2 | Read inputs in fixed order and build a ruling ledger: (a) `## Context` and `### Decisions`; (b) `## Insights` newest-last, so a later ruling supersedes an earlier conflicting one; (c) `resources/discovery--<slug>.md`; (d) any other `resources/*.md`. | | 3 | Decide the tier: adopt the brainstorming `Tier:` recommendation from Decisions or Insights; otherwise apply the PLASTIC.md tiers rubric (S = single mechanism or file cluster, M = one subsystem, L = cross-cutting or novel design). | | 4 | Fill the template section by section, all 8 sections in template order. Read `references/per-section-fill-rules.md` now, filling the template is the trigger. Write the tier as the literal top line above `# Spec:`. Encode every ruling into its matching section, later supersedes earlier on confli...