* feat(cli): block context build when a required connection fails its live test
A context build can take several minutes, so a connection that is
unreachable or misconfigured should stop the build up front instead of
failing partway through. Before the build starts, run a live connection
test for every primary- and context-source connection the build depends
on.
Each test's output is captured in a discarded buffer so raw error text
(and database paths) never reach the user; failures are surfaced only by
connection id and connector type, with a pointer to `ktx connection test
<id>` for the underlying error.
- Interactive setup lets the user fix the connection and retry without
restarting, re-resolving targets so an added/removed/reconfigured
connection is honored.
- `--no-input` exits non-zero and writes a failed context state with a
failureReason, so scripts stop early and setup never reads as ready.
Extract the buffered command IO helper out of setup-databases into
src/io/buffered-command-io.ts so both call sites share one implementation.
* feat(cli): use recovery primitive for database setup
* feat(cli): use recovery primitive for source setup
* docs: document setup connection recovery
* fix(cli): close database recovery gaps
* fix(cli): target failing project in gate hint and preserve missing-input
Address two review findings on the connection-recovery work:
- The connection-gate failure hint emitted `ktx connection test <id>` with no
--project-dir, so a setup run started with `--project-dir ./analytics` pointed
users at cwd/KTX_PROJECT_DIR instead of the project that just failed. Emit the
resolved project dir, matching the contextBuildCommands convention.
- The non-interactive database configure path returned `cancelled`, which the
recovery primitive collapses to `failed`. Sibling paths still report
`missing-input` for absent flags, so incomplete-flag runs were
indistinguishable from real connection failures. The database wrapper now
tracks the configure missing-input signal and restores the `missing-input`
step status; the shared primitive keeps its four outcomes.
ce1516b357