- The adapters' SDKs ship in the `messaging` extra, which the default PM
test environment ([all]) does not carry, so every gateway child timed out
waiting for its adapter. The rig now fails fast naming the missing
distribution and the supported fix (`source ./activate --test-extras
all,messaging`; CI already passes it through setup-pm extras).
- rejected_finalize_leaves_one_copy settles on the ending being visible
whole OR completed by a continuation message, then asserts first that the
continuation did not resume mid-word. Main's Slack adapter now reopens a
sealed stream (message_not_in_streaming_state) with only the text past the
sealed message, which splits the straddling word: gated on #124219. The
#95430 partial-copy gate is dropped (fixed on main, issue closed).
- Slack stream_trailing_whitespace is a strict cell again: main's
edge-whitespace-tolerant finalize (72893ca6a1) makes it pass (#121326).
77a799e2f9