Registered repository migration — fleet ledger

Runtime discovery fixed the effective 12-project registry at SHA-256 ce521fc435f51c893ccf7a334cdfdedf13d1452ca987c3b5cb3bd820d4616034. Every row has a content-bearing snapshot and a terminal state.

Coverage

Project	Before resources	State	Evidence or required action
`L2G`	1 legacy	Deferred	Create the missing project index, then authorise a reviewed wave.
`hanney`	21 legacy	Deferred	Preflight clean; explicit external repository write authority required.
`helix`	3 legacy	Deferred	Preflight clean; explicit external repository write authority required.
`imas-ambix`	162 legacy, 1 typed	Deferred	Four active alternate worktrees must finish or stand down.
`imas-codex`	112 legacy, 37 typed	Deferred	Three active worktrees and a nested research path violate the canonical resolver contract.
`imas-efit`	458 legacy, 439 typed	Deferred	A nested research path violates the canonical resolver contract.
`imas-standard-names`	48 legacy	Deferred	One active worktree; mounted branch is two commits behind its upstream.
`norma`	11 legacy	Deferred	Preflight clean; explicit external repository write authority required.
`nova`	49 legacy	Deferred	Two active alternate worktrees must finish or stand down.
`reckon`	26 legacy, 9 typed	Verified	`157f1c8` pushed to `origin/main`; 0 legacy and 35 typed after.
`tessera`	5 legacy	Deferred	Preflight clean; explicit external repository write authority required.
`vv`	4 legacy	Deferred	Preflight clean; explicit external repository write authority required.

Snapshot and promotion guarantees

All 12 snapshots exist under ~/.config/reckon/migrations/registry-canary-20260729/snapshots/ and have independent SHA-256 values in the machine ledger.
The five clean external repositories were not selected and therefore received no writes.
The six repositories with preflight blockers received no writes and preserve exact blocker evidence.
Promotion stopped at the authorisation boundary; compatibility retirement remains outside this migration.

The next reviewed wave can start with helix and hanney after explicit cross-repository write authority. Blocked repositories remain independently resumable after their named conditions clear.