ci: fix .woodpecker.yml paths — repo was extracted from monorepo

Path filter `payslip-ingest/**` and context `payslip-ingest/` were
leftovers from when this lived as a subdirectory in the /home/wizard/code
monorepo. In this standalone repo there's no such subdirectory, so the
filter never matched and builds never ran on push. Drop the filter and
point context + dockerfile at the repo root.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

.woodpecker.yml

@@ -1,6 +1,5 @@
 when:
   event: push
-  path: "payslip-ingest/**"
 
 clone:
   git:
@@ -23,8 +22,8 @@ steps:
           username: viktorbarzin
           password:
             from_secret: registry-password
-      dockerfile: payslip-ingest/Dockerfile
+      dockerfile: Dockerfile
-      context: payslip-ingest
+      context: .
       auto_tag: true
       platforms:
         - linux/amd64