Daily entry: require grading to reconcile sellable eggs before submit

Problem

A Daily Entry can be submitted when its grade lines total less than its sellable eggs, including no grade lines at all. For example, a 200-egg entry with no losses and no grading can be submitted successfully.

Impact

Submission freezes the entry and creates egg lots only from grade lines. An ungraded 200-egg submission therefore creates zero stock, leaving recorded production that cannot be sold or reconciled through the intended Phase 1 grades-at-collection flow.

Agreed behaviour

Draft Daily Entries may be incomplete or ungraded.
Save & submit requires grades to equal sellable eggs: totalEggs - crackedEggs - dirtyEggs - discardedEggs.
Zero sellable eggs validly reconcile to zero grade lines.
Adjustments have no draft state, so saving an adjustment requires the same exact reconciliation.
UI and domain/API must enforce the invariant.

Adjust screen

Reshape the adjustment dialog to mirror Daily Entry: adjacent Egg counts and Grading panes, sellable calculation, remaining/day-adds-up status, and the same numeric controls. Retain the prior-adjustment context and required reason.

Acceptance criteria

The Daily Entry submit control is disabled until grading exactly reconciles.
Direct API callers cannot submit an ungraded or partially graded non-zero-sellable entry.
Adjustment save is disabled until grading exactly reconciles, and direct API callers cannot bypass it.
The adjustment dialog uses Daily Entry’s counts/grading visual hierarchy and feedback.
Regression tests cover no grades, partial grades, exact reconciliation, and a zero-sellable day.
Update the Help page and specs/product/GLOSSARY.md in the same change, per AGENTS.md docs-sync rule.

Design update: saleable quality eggs (#396)

#396 changes the meaning of the #394 reconciliation rule without weakening it:

Drafts remain flexible.
On submit or adjustment, manual grades must exactly equal total - cracked - dirty - discarded.
Cracked and Dirty will have explicit, rename-safe quality-grade identities. When their snapshotted grade is saleable, the counter creates a separate quality lot; when it is not, it remains a loss. Discarded stays a loss.
The default Cracked and Dirty grades are saleable on fresh installs; existing farms and historic entries are not silently reclassified.
Products mapped to those grades carry independently configured default prices; no fixed discount is imposed.

The implementation must also satisfy #395 by updating every non-CI writer and fixture that posts Daily Entries. The documentation PR contains the full design and execution plan.

docs: keep the quality-egg glossary entries with the PR that ships them

fix(help): correct grade-reconciliation copy on the Help page (#394)

docs(agents): require write-contract changes to update the non-CI wri…

docs: close Codex review gaps in the quality-egg reconciliation design