Add fledge dev-version bump automation

.github/workflows/fledge-bump.yml

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+# Daily fledge dev-version bump. Calls the reusable engine in poissonconsulting/.github.
+# Requires the org-level secrets FLEDGE_APP_ID and FLEDGE_APP_PRIVATE_KEY (passed via
+# `secrets: inherit`) and the companion fledge-tag-on-merge.yml workflow in this repo.
+
+name: fledge-bump
+
+on:
+  schedule:
+    - cron: "0 7 * * *"
+  workflow_dispatch:
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  fledge-bump:
+    uses: poissonconsulting/.github/.github/workflows/fledge-bump.yml@v1
+    secrets: inherit

.github/workflows/fledge-tag-on-merge.yml

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+# Tags the dev version on main after a release-path fledge-bump PR merges.
+# Required alongside fledge-bump.yml. Calls the reusable engine in poissonconsulting/.github.
+
+name: fledge-tag-on-merge
+
+on:
+  pull_request:
+    types: [closed]
+    branches: [main, master]
+
+permissions:
+  contents: write
+
+jobs:
+  tag:
+    if: github.event.pull_request.merged == true && github.event.pull_request.head.ref == 'fledge-bump'
+    uses: poissonconsulting/.github/.github/workflows/fledge-tag-on-merge.yml@v1
+    secrets: inherit