[wpfleger96]

🤖 Stack: #1226 → #1281 → this PR

Closes the two remaining gaps in revising an unfinished team Create, both required before team sync (CONFIG_SYNC_ENABLED) is turned on.

A Save is refused unless this team's roster was read for it, in step with the team's work. refuseDroppingJoined() no longer trusts the cached discovery result. While a Create is unfinished, each Save reads the team's channel fresh (channels.find). A failed read, a created channel that can't be found, or a channel without a roster refuses the Save with "can't be read". It refuses dropping any of the owner's agents on that roster, or any member whose add was confirmed or may have been sent. That check and the revision of the Create's intent run as one step on the team's runner queue (runner.exclusive): earlier steps, including any add, settle first, and no step of the older intent can dispatch or replan between the check and the revision. Teams with no unfinished Create skip the queue and do no extra relay read.

A Save from the team card revises the unfinished Create. While a Create for that team is unfinished, editTeam() revises that Create's intent instead of starting a separate Edit, so its older intent can't add a dropped member back later. A stopped Create refuses the Save with "Resubmit or dismiss it", the same as a reopened one. Uncertain-send evidence stays on the Create.

[wpfleger96]

🤖 Folded into #1281, which now carries both commits from this PR unchanged (head df1098233). Its description covers the fixes.