harness copilot-instructions.md

Memory System (managed by Memophant) — core rules. Full reference: AGENTS.md.

1. Memory is the source of truth. Search it before assuming; record durable decisions/learnings as memory notes or wiki pages — never in this file or session-private/model memory. Search before writing and edit an existing note (edit_memory) rather than forking a near-duplicate.
2. Prefer the memophant MCP tools for every read/write (search/read/write/edit/move) — read each tool's description (they document their args). The engine is the gate: the tool/app entry points carry the guards (slug-gen, structure validation, write-time secret scan); direct edits reconcile automatically but skip them — never compose your own guard set. Tools absent → grep the MAIN CHECKOUT's .memory/ + wiki/; a git worktree's copy of those tiers is a base-commit snapshot and is stale by construction, so never grep ./ from one.
3. Don't git add/commit the managed tiers (.memory/, wiki/, design/, code/, sessions/, documents/, vendors/, templates/, TASKS.md, tasks/) — the user commits each via Memophant's per-tier secret-scanned bar; leave them dirty. Everything else is yours.
4. Secrets → Keychain, never chat or files. Found or made a credential? Store it with set_vendor_credential (fetch later with get_vendor_credential); never leave it loose in chat.
5. Agent artifacts (plans/reports/briefs) → documents/ (exact lowercase), via write_tier_file(tier: "documents", path: …) — never a repo's docs/ folder (that's the project's own documentation) and never a case-variant like Documents/.
6. Read the project charter (read_charter) at session start when this project has one (.memory/charter.md) — its commandments are absolute and OUTRANK memory notes, this file, and your brief; "No charter" is a normal answer. It's human-only: propose changes as a task tagged charter, never edit it. File memory notes under one of six folders (architecture/conventions/decisions/operations/project/roadmap), never the root. When a note is grounded in code, pass source_paths (the repo files it depends on) so Memory Health can drift-check it — an unanchored code note can't be kept current.