Pipeline.hs: entry point, CLI, main loop

Create Omni/Pipeline.hs - entry point, CLI, main loop.

This is the top-level module that wires everything together.

bild metadata: -- : out pipeline -- : dep aeson -- : dep optparse-applicative -- : dep sqlite-simple -- : dep async -- : dep stm

CLI (optparse-applicative):

• pipeline run [options] -- start the pipeline
• pipeline status [--json] -- show health summary
• pipeline drain -- stop new work, finish in-flight

Main loop (per DESIGN.md): 1. INTEGRATE: for each Verified task, run integrateTask 2. VERIFY: for each InProgress task where agent finished, run verifyTask 3. HARVEST: poll agentd status for running dev agents 4. DEVELOP: for Open tasks up to concurrency limit, spawn dev agents 5. Sleep poll interval

Status command:

• Query pipeline_runs for active runs, failures, costs
• Query task DB for task counts by status
• Output text or JSON

Startup recovery:

• Call recoverStaleWorkspaces
• Check for InProgress tasks with no active agentd run -> reset to Open

Tests: basic unit tests for prompt building, config parsing.

Verify: bild --test Omni/Pipeline.hs