feat(stack): add run priority command (#489)

Runs could only move between the high and normal tiers, through the
prioritize and deprioritize commands and the prioritize-run flag. All
three go through a boolean that is now deprecated in the API, and none
of them reaches the low tier.

Add a priority command that takes the tier by name and covers all three
levels. On local preview, add a priority flag that does the same for the
run being created. Passing it together with the older boolean flag is an
error rather than a silent precedence rule.

Leave the boolean commands and flag working unchanged, with the
replacement named in their help text and in a stderr notice.

releasing v1.25.0

New release

Releasing v1.23.0

New release

releasing v1.21.6

mcp: define string item schemas for array inputs (#435)

MCP tools were declaring several inputs as arrays but not specifying the
type of items those arrays contain. This left the generated JSON Schema
ambiguous for clients and validators, even though the tool descriptions
expected string arrays.

Add string item schemas for label filters on context/module search and
targets on local preview so MCP clients can correctly validate and
construct calls for these parameters.

Fixes #402

releasing v1.21.4

bump github.com/urfave/cli/v3 version (#432)

Fixes #409

releasing v1.21.2