Add an execution plan and simplify the design for average-site-IT operability
(the governing constraint from the review):
Model simplifications:
- One wide manifestentries table with an entrytype discriminator, not SQLAlchemy
STI subclasses and not a JSON blob. ~64 total entries fleet-wide make sparse
columns free and keep rows readable in plain SQL.
- Published snapshots freeze the rendered JSON document in a single manifestjson
column; drop the row-mirrored manifestpublishedentries family. Immutability is
structural, rollback is a one-flag flip, diff is a text diff.
- New manifestpayloads table for inline bytes with a ~1 MB app cap.
- regvalue stores the raw JSON literal (DWord typing); applymode/updatewindow
flagged inert-in-engine so the UI labels them.
Execution plan (section 13):
- Phases P0-P6 with gates; parity harness spec (two checks, IT-readable output,
~16-18 machine-profile fixtures); first vertical slice through
gea-shopfloor-cmm; ranked fail-fast risks.
- Milestone 1 = author + publish in shopdb, export to the share by a button,
engine/dispatcher/PCs unchanged. Real pain relief at zero client risk, with a
rollback IT already knows (restore the _meta/history backup).
- Export-to-share promoted to a first-class feature and permanent break-glass.
- Split permission geenforce.manage (edit) vs geenforce.publish (ship).
- Move Up/Down instead of drag-and-drop; a "what would this PC get" simulator
endpoint + UI; three-increment editor build.
- Two-source pctypemap transition window; scope-inventory reconciliation
(gea-shopfloor-display has no share dir).
- Plain-English IT day-to-day runbook proving the design is manageable.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
c88d673d7b