chore: ignore editor swap files

A stray .CLAUDE.md.swp got picked up by `git add -A` while writing the
contributing docs. The CLAUDE.md ignore is anchored (/CLAUDE.md), so it
never covered vim's sibling swap file.

.forgejo/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,30 @@
+---
+name: Bug report
+about: Something doesn't work the way it should
+title: ""
+labels:
+  - bug
+---
+
+### What happened
+
+
+### What you expected
+
+
+### Steps to reproduce
+1.
+2.
+3.
+
+### Environment
+- Calendula version: <!-- Settings → bottom of the screen -->
+- Android version:
+- Device:
+- Installed from: <!-- official F-Droid / the self-hosted repo / built from source -->
+- Affected calendar: <!-- Google, CalDAV (DAVx5, Nextcloud, …), on-device/local,
+                         subscribed/WebCal, birthdays — provider behaviour differs
+                         a lot per account type, so this often points straight at
+                         the cause -->
+- Time zone: <!-- only if the problem involves dates or all-day events -->
+

.forgejo/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,18 @@
+# Kept enabled so anything that doesn't fit the four templates still has a way
+# in (the `ToDo` label exists for exactly those).
+blank_issues_enabled: true
+
+contact_links:
+  - name: Translate Calendula
+    url: https://weblate.dev.jeanlucmakiola.de/engage/calendula/
+    about: >-
+      Translations are managed on Weblate, not here — it owns every values-*
+      file, so a hand-edited translation gets overwritten on the next sync.
+      No coding needed: pick or request a language and translate in the browser.
+
+  - name: Contributing guide
+    url: https://codeberg.org/jlmakiola/calendula/src/branch/main/CONTRIBUTING.md
+    about: >-
+      Before opening a pull request: the issue-first workflow, which release
+      branch to target, how to build (there's a submodule), and the
+      architectural rules a change is reviewed against.

.forgejo/ISSUE_TEMPLATE/crash_report.md

@@ -5,7 +5,7 @@ title: "Crash: "
 labels:
   - bug
   - crash
-  - priority:high
+  - priority/high
 ---
 
 <!--

.forgejo/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,41 @@
+<!--
+Thanks for contributing to Calendula!
+
+Please skim CONTRIBUTING.md if you haven't:
+https://codeberg.org/jlmakiola/calendula/src/branch/main/CONTRIBUTING.md
+
+Two things it's easy to get wrong:
+  • Features need a discussed issue first — an undiscussed feature PR may be
+    closed unmerged even when the code is good.
+  • Target the release branch for your issue's milestone (milestone 2.18.0 →
+    release/v2.18.0), not main. If you targeted main, just say so below and it
+    will be retargeted.
+-->
+
+### What this changes
+
+
+### Why
+
+<!-- Closes #123 — link the issue this implements or fixes. -->
+
+
+### How it was tested
+
+<!--
+Which of these ran green, and anything you exercised by hand. On-device notes
+are especially useful for UI changes.
+
+  ./gradlew lint test assembleDebug
+  python3 scripts/check_translations.py
+-->
+
+
+### Checklist
+
+- [ ] There's an issue for this, and (for a feature) it got a go-ahead
+- [ ] Targeting the release branch for that issue's milestone — or `main`, noted above
+- [ ] `./gradlew lint test assembleDebug` passes locally
+- [ ] No `values-*/strings.xml` touched (Weblate owns those; new English strings in `values/` are fine)
+- [ ] `CHANGELOG.md` updated under `## [Unreleased]`, if the change is user-visible
+- [ ] No planning or design documents committed

.forgejo/workflows/ci.yaml

@@ -72,9 +72,14 @@ jobs:
           distribution: 'zulu'
           java-version: '17'
 
+      # Fully qualified on purpose. Codeberg resolves bare `uses:` refs against
+      # data.forgejo.org, Forgejo's own action mirror — actions/checkout,
+      # setup-java and cache all exist there, but android-actions/setup-android
+      # does not, and the job dies with "repository not found". Gitea's instance
+      # defaults to GitHub, which is why this never surfaced before the split.
       - name: Setup Android SDK
         if: steps.scope.outputs.code == 'true'
-        uses: android-actions/setup-android@v3
+        uses: https://github.com/android-actions/setup-android@v3
         with:
           # Default ("tools platform-tools") drags in the Android Emulator
           # (~300 MB) which the build never uses.

.gitea/ISSUE_TEMPLATE/bug_report.md

@@ -1,23 +0,0 @@
----
-name: Bug report
-about: Something doesn't work the way it should
-title: ""
-labels:
-  - bug
----
-
-### What happened
-
-
-### What you expected
-
-
-### Steps to reproduce
-1.
-2.
-3.
-
-### Environment
-- Calendula version: <!-- Settings → bottom of the screen -->
-- Android version:
-- Device:

.gitea/workflows/release.yaml

@@ -27,6 +27,14 @@ jobs:
   # whether this push actually cuts a new release (no tag for it yet). Keeps the
   # heavy job from running on every merge to main.
   detect:
+    # Gitea only. The workflow directory split already keeps this file invisible
+    # to Codeberg — Forgejo's lookup is first-match-wins, and .forgejo/workflows
+    # exists — but that only holds while .forgejo/ is non-empty. Move the last
+    # file out of it and Codeberg would fall back to .gitea/workflows and start
+    # running the release pipeline on the contributor-facing runner, with no
+    # secrets. repository_owner differs between the two forges regardless of
+    # URL, proxy or instance rename, so this closes it permanently.
+    if: github.repository_owner == 'makiolaj'
     runs-on: docker
     outputs:
       is_release: ${{ steps.v.outputs.is_release }}
@@ -41,8 +49,16 @@ jobs:
       - name: Resolve version and whether it is a new release
         id: v
         env:
-          TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          API: ${{ github.server_url }}/api/v1/repos/${{ github.repository }}
+          # Tags are read from Codeberg, which is canonical — deliberately NOT
+          # from the Gitea API this workflow runs on. The Codeberg -> Gitea sync
+          # is a push mirror, i.e. `git push --mirror`, which deletes refs the
+          # source does not have. A tag minted here on Gitea is therefore wiped
+          # by the next sync (Codeberg does not have it yet) and only reappears
+          # once the tag push at the end of this workflow propagates back.
+          # Asking Gitea inside that window would report "no tag" for a release
+          # that already shipped, and cut it a second time.
+          # Public repo, so this read needs no token.
+          TAG_API: https://codeberg.org/api/v1/repos/jlmakiola/calendula
         run: |
           set -e
           VERSION=$(grep -oP 'versionName\s*=\s*"\K[^"]+' app/build.gradle.kts)
@@ -60,15 +76,28 @@ jobs:
           fi
           # A tag for this version already existing means the release shipped on
           # an earlier push; do nothing. Absent => this merge cuts the release.
-          STATUS=$(curl -s -o /dev/null -w '%{http_code}' \
-            -H "Authorization: token $TOKEN" "$API/git/refs/tags/v$VERSION")
-          if [ "$STATUS" = "200" ]; then
-            echo "Tag v$VERSION already exists — nothing to release."
-            echo "is_release=false" >> "$GITHUB_OUTPUT"
-          else
-            echo "No tag for v$VERSION yet — cutting the release."
-            echo "is_release=true" >> "$GITHUB_OUTPUT"
-          fi
+          #
+          # Anything other than a clean 200/404 is treated as fatal rather than
+          # as "no tag". A Codeberg outage or a network blip would otherwise
+          # read as absent and re-cut a release that has already shipped —
+          # republishing to F-Droid and Play. Failing here is recoverable; a
+          # duplicate release is not.
+          STATUS=$(curl -s -o /dev/null -w '%{http_code}' "$TAG_API/git/refs/tags/v$VERSION" || echo 000)
+          case "$STATUS" in
+            200)
+              echo "Tag v$VERSION already exists on Codeberg — nothing to release."
+              echo "is_release=false" >> "$GITHUB_OUTPUT"
+              ;;
+            404)
+              echo "No tag for v$VERSION on Codeberg yet — cutting the release."
+              echo "is_release=true" >> "$GITHUB_OUTPUT"
+              ;;
+            *)
+              echo "Codeberg tag lookup for v$VERSION returned HTTP $STATUS." >&2
+              echo "Refusing to guess: treating this as 'no tag' could re-cut a shipped release." >&2
+              exit 1
+              ;;
+          esac
 
   # Releases: build + sign + publish, then mint the tag and Gitea release.
   # Also runs on manual dispatch, where it skips the build and just re-signs and
@@ -412,20 +441,31 @@ jobs:
               "prerelease": False,
           }))
           PY
-          # Upsert (re-run safe). POST also creates the tag at target_commitish
-          # if the push mirror hasn't synced it yet.
-          ID=$(curl -s -H "Authorization: token $TOKEN" "$API/releases/tags/$TAG" | jq -r '.id // empty')
-          if [ -n "$ID" ]; then
-            curl -s -o /dev/null -w "release PATCH HTTP %{http_code}\n" -X PATCH \
+          # Create (or update) the release. Codeberg 500s on a POST/GET against a
+          # tag it has only just received — the release request outruns the
+          # indexing of the ref we pushed a moment ago — so a single attempt kept
+          # failing and skipping the mirror even though the very same call
+          # succeeds seconds later. Retry with backoff, and PATCH in place if a
+          # release already exists (re-run safe). A 5xx body still exits curl 0,
+          # so the loop, not `set -e`, controls the flow.
+          ID=""
+          for attempt in 1 2 3 4 5 6; do
+            EXIST=$(curl -s -H "Authorization: token $TOKEN" "$API/releases/tags/$TAG" | jq -r '.id // empty' 2>/dev/null || true)
+            if [ -n "$EXIST" ]; then
+              curl -s -o /dev/null -w "release PATCH HTTP %{http_code}\n" -X PATCH \
+                -H "Authorization: token $TOKEN" -H "Content-Type: application/json" \
+                -d @cb-payload.json "$API/releases/$EXIST"
+              ID="$EXIST"; break
+            fi
+            CODE=$(curl -s -o cb-response.json -w "%{http_code}" -X POST \
               -H "Authorization: token $TOKEN" -H "Content-Type: application/json" \
-              -d @cb-payload.json "$API/releases/$ID"
-          else
-            curl -s -o cb-response.json -w "release POST HTTP %{http_code}\n" -X POST \
-              -H "Authorization: token $TOKEN" -H "Content-Type: application/json" \
-              -d @cb-payload.json "$API/releases"
+              -d @cb-payload.json "$API/releases")
+            echo "release POST attempt $attempt HTTP $CODE"
             ID=$(jq -r '.id // empty' cb-response.json 2>/dev/null || true)
-          fi
-          if [ -z "$ID" ]; then echo "Could not resolve Codeberg release id." >&2; exit 1; fi
+            [ -n "$ID" ] && break
+            sleep $((attempt * 10))
+          done
+          if [ -z "$ID" ]; then echo "Could not resolve Codeberg release id after retries." >&2; exit 1; fi
 
           # Attach APK + checksum, replacing any prior asset of the same name.
           for A in "$ASSET_APK" "$ASSET_SUM"; do

.gitea/workflows/renovate.yml

@@ -29,14 +29,30 @@ jobs:
       - name: Run Renovate
         run: renovate
         env:
-          # Self-hosted Gitea, not github.com.
-          RENOVATE_PLATFORM: gitea
-          RENOVATE_ENDPOINT: https://gitea.jeanlucmakiola.de/api/v1
-          # Bot-account token (Gitea secret). Needs repo read/write + PR scope.
+          # Renovate targets Codeberg (canonical) while still RUNNING on the
+          # Gitea runner. Moving the job to Codeberg would put a repo-write
+          # token on the contributor-facing runner, which is exactly what the
+          # .forgejo/ vs .gitea/ split exists to prevent — so the token stays
+          # where the other secrets live and only the API calls cross over.
+          #
+          # Platform is `forgejo`, not `gitea`: Codeberg runs Forgejo, and the
+          # pinned image ships a distinct forgejo platform module.
+          RENOVATE_PLATFORM: forgejo
+          RENOVATE_ENDPOINT: https://codeberg.org/api/v1
+          # Codeberg bot-account token (Gitea secret). Needs repo read/write +
+          # PR scope on jlmakiola/calendula.
           RENOVATE_TOKEN: ${{ secrets.RENOVATE_TOKEN }}
           # Scope to this repo only — no org-wide autodiscovery.
           RENOVATE_AUTODISCOVER: 'false'
-          RENOVATE_REPOSITORIES: '["makiolaj/calendula"]'
-          # Commits/PRs authored as the bot, not a real maintainer.
+          RENOVATE_REPOSITORIES: '["jlmakiola/calendula"]'
+          # Commits/PRs authored as the bot, not a real maintainer. This address
+          # must be a verified email on the Codeberg bot account, otherwise the
+          # commits show up unattributed there.
           RENOVATE_GIT_AUTHOR: 'Renovate Bot <renovate@jeanlucmakiola.de>'
+          # Read-only github.com PAT (no scopes needed). Unaffected by the forge
+          # move — nearly every dependency is *released* on GitHub, and without
+          # this,
+          # changelog/release-note lookups hit the 60/h anonymous rate limit
+          # and PRs arrive with an empty "Release Notes" section.
+          RENOVATE_GITHUB_COM_TOKEN: ${{ secrets.GITHUB_COM_TOKEN }}
           LOG_LEVEL: info

.gitignore

@@ -50,6 +50,11 @@ google-services.json
 .DS_Store
 Thumbs.db
 
+# Editor swap/backup files
+*.swp
+*.swo
+*~
+
 # F-Droid local artifacts (the pipeline generates them in CI)
 /fdroid/
 

.gitmodules

@@ -1,3 +1,3 @@
 [submodule "floret-kit"]
 	path = floret-kit
-	url = https://gitea.jeanlucmakiola.de/makiolaj/floret-kit.git
+	url = https://codeberg.org/jlmakiola/floret-kit.git

.planning/PROJECT.md

@@ -40,5 +40,9 @@ shows a stylized "1" on a slate squircle.
 
 ## Source
 
-Hosted on self-hosted Gitea, released through self-hosted F-Droid repo on
-Hetzner. Same infrastructure as `HouseHoldKeaper`.
+**Codeberg (`jlmakiola/calendula`) is canonical** — git, issues, PRs, tags and
+releases, plus contributor CI. The self-hosted Gitea instance is build
+infrastructure only: it holds the signing key, runs the release pipeline, and
+publishes the self-hosted F-Droid repo on Hetzner. Codeberg push-mirrors `main`
+and tags to Gitea, where a bumped `versionName` triggers the release. Also
+published to the official F-Droid repo. See `docs/RELEASING.md`.

.planning/REQUIREMENTS.md

@@ -1,6 +1,6 @@
 # Calendula — Requirements
 
-See full design spec: `docs/superpowers/specs/2026-06-08-calendar-app-design.md`
+Architecture reference: [`../docs/ARCHITECTURE.md`](../docs/ARCHITECTURE.md)
 
 ## V1 Scope (Variant "B") — shipped in full (v1.0.0, 2026-06-11)
 

.planning/ROADMAP.md

@@ -55,9 +55,8 @@ after v0.6 (full event read) plus the onboarding-screen polish pass.
 
 ## v2.0 — Write Support (complete, shipped 2026-06-11)
 
-Delivered in four releasable slices (plan:
-`docs/superpowers/plans/2026-06-11-03-write-support.md`). The V1 spec is a
-guide here, not a contract — scope per slice is decided as we go.
+Delivered in four releasable slices. The V1 spec is a guide here, not a
+contract — scope per slice is decided as we go.
 
 | Version | Milestone | Status |
 |---|---|---|
@@ -244,8 +243,7 @@ pass on the existing controls; new toggles ride in with their own features.
     sequential branches: `feat/ics-export` (write side + UID-on-create precursor)
     then `feat/ics-import` (parser, restore, dedup by UID). Import is
     liberal-in/strict-out: skip-and-report foreign `VTIMEZONE` / `RECURRENCE-ID`
-    / guest lists it can't model. Plans:
-    `docs/superpowers/plans/2026-06-18-05-ics-export.md` + `…-06-ics-import.md`.
+    / guest lists it can't model.
 11. **Snooze / dismiss notification actions** *(merged into release/v2.8.0)* —
     followed the `.ics` work; inherits v2.6's deferred exact-alarm/WorkManager
     decision (snooze must re-fire an alarm).

.planning/STATE.md

@@ -25,7 +25,7 @@ release-cut.
 
 ## Progress
 
-- [x] Design spec written and committed (`docs/superpowers/specs/2026-06-08-calendar-app-design.md`)
+- [x] Design spec written and committed (2026-06-08)
 - [x] V1 design decisions resolved (App name "Calendula", icon, seed color)
 - [x] Plan 01 written and executed — foundation lands (theme, icon, i18n, Hilt, DataStore, CI green)
 - [x] Plan 02 written and executed — data layer + permission flow + debug screen

CHANGELOG.md

@@ -7,6 +7,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Changed
+- Calendula's source code now lives on **Codeberg**, where its issues already
+  were. The **Source code** and **License** links in Settings → About point
+  there, so reporting a bug and reading the code no longer land on two different
+  sites. Nothing about the app itself changes, and the F-Droid repository is
+  unaffected.
+
 ## [2.16.0] — 2026-07-24
 
 ### Added

CONTRIBUTING.md

@@ -0,0 +1,192 @@
+# Contributing to Calendula
+
+Calendula is a Material 3 Expressive calendar app that lives strictly on top of
+Android's `CalendarContract` — no app database, no sync stack, no network access.
+That constraint shapes most review comments, so
+[`docs/ARCHITECTURE.md`](docs/ARCHITECTURE.md) is worth skimming before you write
+code. This file is the practical how.
+
+**[Codeberg](https://codeberg.org/jlmakiola/calendula) is the canonical home** —
+issues, pull requests, releases. The self-hosted Gitea instance referenced in the
+release docs is build infrastructure only; there is nothing to contribute there.
+Be decent to the people you meet in the tracker.
+
+## Start with an issue
+
+| You want to | Do this |
+|---|---|
+| Add a feature | **Open an issue first** and wait for a go-ahead |
+| Fix a bug | Open an issue, then a pull request |
+| Fix a typo, a comment, or docs | Just open the pull request |
+| Add or fix a translation | **Don't** — [use Weblate](#translations) |
+
+Features get an opinion before they get code: whether Calendula should do a
+thing at all is the one decision a patch can't make. A feature PR that arrives
+without a discussed issue may be closed unmerged even when the code is good —
+please don't spend a weekend on one first.
+
+Bugs are more straightforward, but still start with an issue: it's what carries
+the milestone and gives the changelog something to link.
+
+Issue templates cover bug, crash, feature and question. For a crash, let the app
+do the work — **Settings → Report a problem**, or the prompt shown after a crash,
+captures the stack trace and prefills the form. The report contains app, Android
+and device versions plus the trace; no calendar content, no personal data.
+
+## Which branch to target
+
+Calendula releases by merging a version bump into `main`, so `main` is a release
+trigger rather than a staging area. Work is assembled on release branches first.
+
+Once your issue has a milestone, that milestone names your branch:
+
+| Milestone | Target branch |
+|---|---|
+| `2.18.0` | `release/v2.18.0` |
+
+Every milestone has a matching branch. If it's somehow missing, target `main` and
+mention it in the PR — it will be retargeted. Don't pick an older release branch:
+they're kept after shipping, so the newest one isn't necessarily yours.
+
+## Translations
+
+**Never edit a `values-*/strings.xml` file in a pull request** — German included.
+Translations are owned by a self-hosted Weblate that writes to this repository
+directly, and a hand-edit is overwritten on the next sync.
+
+→ **[Translate Calendula on Weblate](https://weblate.dev.jeanlucmakiola.de/engage/calendula/)**
+
+Adding a *new* English string to `values/strings.xml` is normal PR work; Weblate
+picks it up and offers it to translators. Partial translations are expected and
+fine — missing keys are informational. Stale and orphaned keys are not, so run
+
+```sh
+python3 scripts/check_translations.py
+```
+
+before pushing. It reports those more clearly than lint's `MissingTranslation`
+does.
+
+## Build & test
+
+```sh
+git clone --recurse-submodules https://codeberg.org/jlmakiola/calendula.git
+```
+
+The `floret-kit` submodule is a composite build compiled from source. An
+existing clone needs `git submodule update --init --recursive`, or nothing
+resolves.
+
+- **JDK 17** — not newer; the Android Gradle Plugin requires exactly 17. Set
+  `JAVA_HOME` if your default differs.
+- **Android SDK** — platform 37 (`compileSdk`) and build-tools 36.0.0, located
+  via `ANDROID_HOME` or a gitignored `local.properties` with `sdk.dir`. If you
+  go the `local.properties` route the included build needs its own copy at
+  `floret-kit/local.properties`; `ANDROID_HOME` covers both at once and is the
+  easier path.
+
+The Gradle wrapper is checked in, so no system Gradle is needed.
+
+```sh
+./gradlew lint test assembleDebug     # roughly what CI runs
+```
+
+A single test class, or a pattern:
+
+```sh
+./gradlew testDebugUnitTest --tests "de.jeanlucmakiola.calendula.domain.SimpleRecurrenceTest"
+./gradlew testDebugUnitTest --tests "*SimpleRecurrence*"
+```
+
+CI reports one `CI` check per pull request: `lintDebug`, `testDebugUnitTest`,
+`assembleDebug`, and a Trivy scan. Pull requests touching only docs, F-Droid
+metadata or the licence skip the Android build and go green quickly. More detail
+in [`docs/BUILDING.md`](docs/BUILDING.md).
+
+## The rules
+
+These are the ones that turn into review comments.
+
+1. **No network.** Calendula holds no `INTERNET` permission, and that's a
+   feature rather than an oversight. Anything that would need one is a product
+   decision before it's a patch — the crash reporter deliberately opens a
+   prefilled web issue instead of posting anything itself.
+2. **The provider is the only database.** No Room, no cache, no local mirror of
+   events. `CalendarContract` is the single source of truth, which is also why
+   externally synced changes work for free.
+3. **Don't patch UI state after a write.** A `ContentObserver` re-queries and
+   views recompose from fresh provider state. Hand-patching a list after saving
+   appears to work, then quietly diverges from what the provider actually stored.
+4. **`domain/` has no Android imports.** Models, validation, recurrence
+   rendering, conflict snapshots and the `.ics` codec stay pure Kotlin so they
+   remain JVM-testable.
+5. **Tests run on the JVM.** JUnit 5 + Truth + Turbine. The seams exist for you:
+   fake the data source (`FakeCalendarDataSource`), and feed mappers plain maps
+   through `ColumnReader` instead of cursors. Instrumented tests are a last
+   resort, not a default.
+6. **Read before touching the subtle pipelines.** Recurring writes (UNTIL vs
+   DURATION, exception URIs, series splits), save-conflict detection and reminder
+   delivery (post-before-mark) follow provider-driven rules that are documented
+   in [`docs/ARCHITECTURE.md`](docs/ARCHITECTURE.md) and are not guessable from
+   the code alone.
+7. **Don't break reproducible builds.** `vcsInfo`, `dependenciesInfo` and the AGP
+   metadata block are disabled on purpose so the official F-Droid repo can verify
+   our binary against a from-source rebuild.
+   `scripts/check_reproducible_release.sh` runs on every pull request, including
+   docs-only ones.
+
+## UI conventions
+
+Material 3 Expressive throughout, built from the system's own tokens and
+components — colour-scheme tokens rather than hardcoded colours, `ListItem` for
+settings rows.
+
+**Selection pickers are full-screen.** Every browse-style "choose one" surface
+uses floret-kit's `FullScreenPicker` / `OptionPicker`; one that needs a commit or
+extra action passes it through the picker's `actions` slot. The exception is the
+recurring-scope chooser (*this / this and following / all*), which stays a
+compact dialog — a two- or three-option decision reads better as a popup than as
+a nearly empty screen. `AlertDialog` is for plain confirmations only, and radio-
+or text-list dialogs aren't used at all.
+
+Shared UI machinery lives in the `floret-kit` submodule and has
+[its own contributing guide](https://codeberg.org/jlmakiola/floret-kit/src/branch/main/CONTRIBUTING.md);
+changing it means a pull request against that repository plus a submodule bump
+here.
+
+## Commits & pull requests
+
+Conventional commits, scoped to the area you touched:
+
+```
+fix(calendars): keep an event's own calendar when it is switched off
+feat(month): pull-to-expand the split view (#38)
+docs(architecture): record what the second review pass changed
+```
+
+Types in use: `feat` `fix` `docs` `refactor` `style` `chore` `ci` `build`
+`revert`. Reference the issue in the subject or the body. Keep commits small —
+small commits revert cleanly, which matters more here than a tidy history.
+
+If your change is user-visible, add an entry under `## [Unreleased]` in
+[`CHANGELOG.md`](CHANGELOG.md). Match the surrounding voice: entries describe
+what changed *for the person using the app*, and why, not what changed in the
+code. Link the issue and add its reference at the bottom of the file. It may get
+reworded when the release is cut, so don't agonise over it.
+
+Please don't commit planning or design documents. Code, tests, architecture notes
+and the changelog land; the reasoning belongs in the commit message and the
+issue.
+
+## Not going to happen
+
+Saving you the effort:
+
+- **Drag-and-drop event rescheduling.** Considered repeatedly, settled as a no.
+- **Anything requiring `INTERNET`**, including a sync stack of our own.
+- **An app-side event database.**
+
+## Licence
+
+Calendula is [MIT](LICENSE). By contributing you agree your changes ship under
+the same licence.

README.md

@@ -8,7 +8,7 @@
 Reads, writes, and reminds — on top of the system calendar, with zero network access.</p>
 
 <p>
-<a href="https://gitea.jeanlucmakiola.de/makiolaj/calendula/actions"><img src="https://gitea.jeanlucmakiola.de/makiolaj/calendula/actions/workflows/ci.yaml/badge.svg?branch=main" alt="CI"></a>
+<a href="https://codeberg.org/jlmakiola/calendula/actions"><img src="https://codeberg.org/jlmakiola/calendula/actions/workflows/ci.yaml/badge.svg?branch=main" alt="CI"></a>
 <img src="https://img.shields.io/badge/Android-10%2B-3DDC84?logo=android&logoColor=white" alt="Android 10+">
 <img src="https://img.shields.io/badge/Kotlin-Compose-7F52FF?logo=kotlin&logoColor=white" alt="Kotlin + Compose">
 <img src="https://img.shields.io/badge/Material%203-Expressive-4285F4" alt="Material 3 Expressive">
@@ -105,10 +105,26 @@ without reinstalling. Or build from source — see below.
 
 ## 📚 Documentation
 
+- **[Contributing](CONTRIBUTING.md)** — how to report, propose, and patch
 - **[Building from source](docs/BUILDING.md)** — requirements and Gradle tasks
 - **[Architecture](docs/ARCHITECTURE.md)** — the layered design and key pipelines
 - **[Roadmap](.planning/ROADMAP.md)** — what's shipped and what's next
 
+## 🤝 Contributing
+
+Bug reports, ideas, and patches are all welcome on
+**[Codeberg](https://codeberg.org/jlmakiola/calendula/issues)**.
+
+The short version: **start with an issue.** Features get a yes-or-no before they
+get code, and both features and bugs are assigned a milestone whose
+`release/vX.Y.Z` branch your pull request then targets. Typo and docs fixes can
+skip straight to a pull request. Translations don't go through pull requests at
+all — [Weblate owns them](#-translations).
+
+Read **[CONTRIBUTING.md](CONTRIBUTING.md)** before writing code: it covers the
+workflow, the build (note the `floret-kit` submodule), and the architectural
+rules a change is reviewed against.
+
 ## 🌍 Translations
 
 Calendula ships in German and English, and you're warmly invited to add your

app/src/main/java/de/jeanlucmakiola/calendula/ui/settings/SettingsScreen.kt

@@ -56,6 +56,7 @@ import androidx.compose.material.icons.filled.Keyboard
 import androidx.compose.material.icons.filled.Language
 import androidx.compose.material.icons.filled.Notifications
 import androidx.compose.material.icons.filled.Palette
+import androidx.compose.material.icons.filled.PrivacyTip
 import androidx.compose.material.icons.filled.Translate
 import androidx.compose.material.icons.filled.Tune
 import androidx.compose.material.icons.filled.UploadFile
@@ -408,7 +409,9 @@ private fun LanguageRow(position: Position) {
 @Composable
 private fun AboutCard() {
     // The card layout lives in floret-kit (components.AboutCard); Calendula
-    // supplies its own logo, author and the source / licence / support links.
+    // supplies its own logo, author and the source / licence / privacy / support
+    // links. The privacy policy has to be reachable from inside the app, not just
+    // from the store listing, because Calendula touches calendar and contact data.
     AboutCard(
         logo = { AppLogo() },
         appName = stringResource(R.string.app_name),
@@ -424,6 +427,11 @@ private fun AboutCard() {
                 label = stringResource(R.string.settings_license),
                 url = stringResource(R.string.about_license_url),
             ),
+            AboutLink(
+                icon = Icons.Default.PrivacyTip,
+                label = stringResource(R.string.settings_about_privacy),
+                url = stringResource(R.string.about_privacy_url),
+            ),
         ),
         highlightLink = AboutLink(
             icon = Icons.Default.Favorite,

app/src/main/res/values-ar/strings.xml

@@ -53,11 +53,11 @@
     <string name="event_share_failed">تعذّر مشاركة هذا الحدث.</string>
     <string name="event_delete_title">حذف الحدث؟</string>
     <string name="event_delete_body">الحدث أُزيل من تقويمك ومن كل جهاز تتم مزامنته معه.</string>
-    <string name="event_delete_recurring_title">حذف الحدث المتكرر</string>
+    <string name="event_delete_recurring_title">حذف الحدث المتكرّر</string>
     <string name="event_delete_option_occurrence">فقط هذا الحدث</string>
     <string name="event_delete_option_following">هذا وجميع الأحداث اللاحقة</string>
     <string name="event_delete_option_series">جميع الأحداث في السلسلة</string>
-    <string name="event_edit_recurring_title">تعديل الحدث المتكرر</string>
+    <string name="event_edit_recurring_title">تعديل الحدث المتكرّر</string>
     <string name="event_delete_failed">تعذّر حذف الحدث</string>
     <string name="event_delete_write_denied">Calendula يحتاج إلى صلاحية للكتابة لحذف الأحداث</string>
     <string name="dialog_cancel">إلغاء</string>
@@ -108,7 +108,7 @@
     <string name="event_edit_conflict_discard_hint">الحدث يبقى كما هو الآن</string>
     <string name="import_reminder_prompt_title">هل تريد تطبيق تذكيرك الافتراضي؟</string>
     <string name="event_edit_gone_body">هذا الحدث حُذف في هذه الأثناء، على سبيل المثال على جهاز آخر. لم يعد من الممكن حفظ تغييراتك.</string>
-    <string name="event_edit_more_fields">المزيد من الخيارات</string>
+    <string name="event_edit_more_fields">المزيد من الخانات</string>
     <string name="event_access_public">علني</string>
     <string name="event_access_default">الافتراضي</string>
     <string name="event_availability_busy">مشغول</string>
@@ -153,7 +153,7 @@
     <string name="recurrence_with_until">%1$s حتى %2$s</string>
     <string name="recurrence_with_count">%1$s، %2$d مرّات</string>
     <string name="import_reminder_prompt_apply">طَبِّق الافتراضي</string>
-    <string name="event_detail_recurring">حدث مُتكرر</string>
+    <string name="event_detail_recurring">حدث متكرّر</string>
     <string name="recurrence_on_days">%1$s في %2$s</string>
     <string name="event_attendee_unknown">—</string>
     <string name="event_attendee_accepted">تم القُبول</string>
@@ -166,7 +166,7 @@
     <string name="event_status_cancelled">ملغي</string>
     <string name="event_availability_free">متاح</string>
     <string name="event_access_private">خاص</string>
-    <string name="event_access_confidential">سري</string>
+    <string name="event_access_confidential">سرّي</string>
     <string name="event_attendee_organizer">المُنظِّم</string>
     <string name="event_attendee_optional">اختياري</string>
     <string name="reminder_default">التذكير الافتراضي</string>
@@ -180,7 +180,7 @@
     <string name="reminder_onboarding_body">Android لا يعرض تذكيرات الأحداث من نفسه — بل يجب أن يقوم تطبيق تقويم بذلك. دع Calendula يتولى هذه المهمة.</string>
     <string name="reminder_benefit_delivery_body">كل تذكير لأحداثك يصِل كإشعار، في الوقت المحدد تمامًا.</string>
     <string name="reminder_benefit_duplicates_title">هل تستخدم تطبيق تقويم ثانٍ؟</string>
-    <string name="reminder_benefit_duplicates_body">إذا كان تطبيق آخر أيضًا ينشر تذكيرات، فستراهم مرتين — قم بإيقاف تشغيلهم هناك أو هنا.</string>
+    <string name="reminder_benefit_duplicates_body">إذا تطبيق آخر أيضًا ينشر تذكيرات، فستراهم مرتين — قم بإيقاف تشغيلهم هناك أو هنا.</string>
     <string name="reminder_benefit_reversible_title">يمكنك تغييره في أي وقت</string>
     <string name="reminder_onboarding_enable_button">شَغِّل التذكيرات</string>
     <string name="reminder_onboarding_skip_button">ليس الآن</string>
@@ -200,7 +200,7 @@
     <string name="search_hint">البحث عن الأحداث</string>
     <string name="search_clear">مسح</string>
     <string name="agenda_no_more_today">لا مزيد من الأحداث اليوم</string>
-    <string name="search_empty">لا توجد أحداث مطابقة ”%1$s“.</string>
+    <string name="search_empty">لا أحداث مطابقة ”%1$s“.</string>
     <string name="search_idle_hint">ابحث عن أحداثك بالعنوان، الموقع أو الملاحظات.</string>
     <string name="search_back">الرجوع</string>
     <string name="search_action">البحث</string>
@@ -217,7 +217,7 @@
     <string name="back">رجوع</string>
     <string name="settings_section_appearance">المظهر</string>
     <string name="settings_dynamic_color">اللون الديناميكي</string>
-    <string name="settings_dynamic_color_unavailable">يتطلب Android 12 أو أحدث</string>
+    <string name="settings_dynamic_color_unavailable">يتطلب أندرويد ١٢ أو أحدث</string>
     <string name="settings_default_view">طريقة العرض الافتراضية</string>
     <string name="settings_soften_colors">ألوان تقويم ناعمة</string>
     <string name="settings_soften_colors_summary">خفف ألوان التقويم والأحداث لتتناسب مع الثيم. قم بإيقافه لإظهار الألوان الخام من مصدر التقويم.</string>
@@ -227,7 +227,7 @@
     <string name="settings_font_choose_file">اختر ملفًا…</string>
     <string name="settings_font_custom_selected">خط مخصص</string>
     <string name="settings_font_import_failed">تعذّر قراءة هذا الملف كخط</string>
-    <string name="settings_week_start">يبدأ الأسبوع في</string>
+    <string name="settings_week_start">الأسبوع يبدأ في</string>
     <string name="settings_week_start_auto">تلقائي</string>
     <string name="settings_time_format_auto">تلقائي</string>
     <string name="settings_time_format">تنسيق الوقت</string>
@@ -243,4 +243,58 @@
     <string name="settings_past_events_show">إظهار</string>
     <string name="settings_past_events_hide">إخفاء</string>
     <string name="settings_agenda_header">جدول</string>
+    <string name="event_edit_timezone_device">المنطقة الزمنية للجهاز</string>
+    <string name="event_edit_timezone_search">البحث عن المناطق الزمنية</string>
+    <string name="event_edit_timezone_all">جميع المناطق الزمنية</string>
+    <string name="event_edit_timezone_none">لا منطقة زمنية تطابق \"%1$s\"</string>
+    <string name="event_edit_timezone_local_time">%1$s توقيتك</string>
+    <string name="event_edit_timezone_recent">الأحدث</string>
+    <string name="event_edit_recurrence_incomplete">أدخل رقمًا من ١ إلى ٩٩٩</string>
+    <plurals name="duration_minutes">
+        <item quantity="zero">(%d) لا دقائق</item>
+        <item quantity="one">(%d) دقيقة واحده</item>
+        <item quantity="two">%d دقيقتان</item>
+        <item quantity="few">%d دقائق</item>
+        <item quantity="many">%d دقيقة</item>
+        <item quantity="other">%d دقيقة</item>
+    </plurals>
+    <plurals name="duration_hours">
+        <item quantity="zero">(%d) لا ساعات</item>
+        <item quantity="one">(%d) ساعة واحده</item>
+        <item quantity="two">%d ساعتان</item>
+        <item quantity="few">%d ساعات</item>
+        <item quantity="many">%d ساعة</item>
+        <item quantity="other">%d ساعة</item>
+    </plurals>
+    <plurals name="duration_days">
+        <item quantity="zero">(%d) لا أيام</item>
+        <item quantity="one">(%d) يوم واحد</item>
+        <item quantity="two">%d يومان</item>
+        <item quantity="few">%d أيام</item>
+        <item quantity="many">%d يوم</item>
+        <item quantity="other">%d يوم</item>
+    </plurals>
+    <plurals name="duration_weeks">
+        <item quantity="zero">(%d) لا أسابيع</item>
+        <item quantity="one">(%d) أسبوع واحد</item>
+        <item quantity="two">%d أسبوعان</item>
+        <item quantity="few">%d أسابيع</item>
+        <item quantity="many">%d أسبوع</item>
+        <item quantity="other">%d أسبوع</item>
+    </plurals>
+    <string name="agenda_span_starts">يبدأ %1$s</string>
+    <string name="agenda_span_ends">ينتهي %1$s</string>
+    <string name="today_jump_action">الانتقال إلى اليوم</string>
+    <string name="widget_refresh">تحديث</string>
+    <string name="settings_app_name">اسم التطبيق</string>
+    <string name="settings_dim_completed">تعتيم الأحداث المكتملة</string>
+    <string name="settings_dim_completed_summary">تعتيم الأحداث التي انتهت بالفعل في عرض الشهر والأسبوع</string>
+    <string name="settings_today_toolbar">زر اليوم في شريط الأدوات</string>
+    <string name="settings_today_toolbar_summary">إظهار زر الانتقال إلى اليوم في شريط الأدوات بدلاً من زر عائم</string>
+    <string name="settings_app_name_summary">اعرض Calendula كـ \"Calendar\" في مشغّل التطبيقات الخاص بك. فقط الاسم في المشغّل يتغير؛ وقد ينتقل الرمز إلى مكان جديد بعد التبديل.</string>
+    <string name="settings_past_events_dim">تعتيم</string>
+    <string name="settings_past_events">الأحداث السابقة</string>
+    <string name="settings_agenda_range">مدى الجدول</string>
+    <string name="agenda_range_custom">مخصص…</string>
+    <string name="agenda_range_custom_hint">أيام</string>
 </resources>

app/src/main/res/values-pl/strings.xml

@@ -354,7 +354,7 @@
     <string name="settings_translate">Pomóż w tłumaczeniu</string>
     <string name="settings_translate_hint">Dodaj lub ulepsz tłumaczenie w Weblate</string>
     <string name="settings_appearance_subtitle">Motyw, domyślny widok, pierwszy dzień tygodnia</string>
-    <string name="settings_views_subtitle">Kolejność przycisku szybkiego przełączania oraz menu</string>
+    <string name="settings_views_subtitle">Układ widoku miesiąca, przycisk szybkiego przełączania, kolejność menu</string>
     <string name="settings_event_form_subtitle">Domyślne pola dla nowych wydarzeń</string>
     <string name="settings_notifications_subtitle">Przypomnienia o wydarzeniach</string>
     <string name="settings_special_dates_subtitle">Urodziny i rocznice kontaktów</string>
@@ -517,4 +517,32 @@
     <string name="settings_agenda_show_today_hint">Zachowaj dzisiejszy dzień na górze agendy i widżetu, nawet gdy nie ma już na dziś żadnych zadań.</string>
     <string name="special_dates_calendar_birthday">Urodziny</string>
     <string name="special_dates_calendar_anniversary">Rocznice</string>
+    <string name="event_edit_timezone_device">Strefa czasowa urządzenia</string>
+    <string name="event_edit_timezone_device_summary">Podąża za Twoją lokalizacją</string>
+    <string name="event_edit_timezone_search">Znajdź strefę czasową</string>
+    <string name="event_edit_timezone_recent">Ostatnie</string>
+    <string name="event_edit_timezone_all">Wszystkie strefy czasowe</string>
+    <string name="event_edit_timezone_none">Żadna strefa czasowa nie pasuje do „%1$s”</string>
+    <string name="event_edit_timezone_local_time">%1$s Twojego czasu</string>
+    <string name="event_edit_recurrence_incomplete">Wpisz liczbę od 1 do 999</string>
+    <string name="agenda_span_starts">Początek o %1$s</string>
+    <string name="agenda_span_ends">Koniec o %1$s</string>
+    <string name="today_jump_action">Dzisiaj</string>
+    <string name="settings_today_toolbar">Przycisk „Dzisiaj” na pasku narzędzi</string>
+    <string name="settings_today_toolbar_summary">Pokaż przycisk skoku do dzisiaj na pasku narzędzi zamiast przycisku pływającego</string>
+    <string name="settings_app_name">Nazwa aplikacji</string>
+    <string name="settings_app_name_summary">Wyświetlaj Calendula jako „Kalendarz” w menu aplikacji. Zmieni się tylko nazwa w menu; po przełączeniu ikona może pojawić się w innym miejscu.</string>
+    <string name="settings_month_header">Widok miesiąca</string>
+    <string name="settings_month_view_style">Styl widoku miesiąca</string>
+    <string name="month_style_paged">Strony</string>
+    <string name="month_style_paged_summary">Jeden miesiąc wypełnia ekran. Przesuń w lewo lub w prawo, aby zmienić miesiąc.</string>
+    <string name="month_style_continuous">Przewijanie miesięcy</string>
+    <string name="month_style_continuous_summary">Każdy miesiąc znajduje się pod własnym nagłówkiem, oddzielony od następnego niewielkim odstępem.</string>
+    <string name="month_style_dense">Tygodnie bez przerw</string>
+    <string name="month_style_dense_summary">Tygodnie są ułożone jeden po drugim, każdy miesiąc płynnie łączy się z następnym, bez odstępu pomiędzy.</string>
+    <string name="month_style_split">Podzielony</string>
+    <string name="month_style_split_summary">Zwięzła siatka wyróżnia dni z wydarzeniami a lista dla dnia wybranego dotknięciem wyświetla się poniżej.</string>
+    <string name="month_split_no_events">Brak planów</string>
+    <string name="month_split_expand">Pokaż cały miesiąc</string>
+    <string name="month_split_collapse">Pokaż wydarzenia dnia</string>
 </resources>

app/src/main/res/values/strings.xml

@@ -462,6 +462,7 @@
     <string name="settings_license_value">MIT</string>
     <string name="settings_about_author">by Jean-Luc Makiola</string>
     <string name="settings_about_source">Source</string>
+    <string name="settings_about_privacy">Privacy policy</string>
     <string name="settings_about_support">Support development</string>
     <string name="settings_about_version">Version %1$s</string>
     <string name="settings_about_logo_desc">Calendula app icon</string>
@@ -570,8 +571,9 @@
     <string name="settings_qs_tile">Add Quick Settings tile</string>
     <string name="settings_qs_tile_hint">Add a “New event” tile to the Quick Settings panel.</string>
 
-    <string name="about_source_url" translatable="false">https://gitea.jeanlucmakiola.de/makiolaj/calendula</string>
-    <string name="about_license_url" translatable="false">https://gitea.jeanlucmakiola.de/makiolaj/calendula/src/branch/main/LICENSE</string>
+    <string name="about_source_url" translatable="false">https://codeberg.org/jlmakiola/calendula</string>
+    <string name="about_license_url" translatable="false">https://codeberg.org/jlmakiola/calendula/src/branch/main/LICENSE</string>
+    <string name="about_privacy_url" translatable="false">https://jeanlucmakiola.de/calendula/privacy</string>
     <string name="about_support_url" translatable="false">https://ko-fi.com/jeanlucmakiola</string>
     <string name="about_translate_url" translatable="false">https://weblate.dev.jeanlucmakiola.de/engage/calendula/</string>
 

docs/ARCHITECTURE.md

@@ -62,9 +62,15 @@ flowchart TD
 - **`data/prefs/`** — DataStore-backed settings (theme, week start, form
   field defaults, reminders toggle) and small state (last-used calendar).
 - **`ui/`** — one package per screen, each with Screen + ViewModel +
-  UiState. Shared pieces in `ui/common/` (OptionCard — the app's only
-  sanctioned selection-dialog style —, recurrence humanizer, FAB column,
-  drawer, transitions).
+  UiState. Shared pieces in `ui/common/` (recurrence humanizer, FAB column,
+  drawer, transitions). Selection pickers are full-screen and come from
+  floret-kit (`FullScreenPicker` / `OptionPicker`); `AlertDialog` is reserved
+  for plain confirmations and the compact recurring-scope choosers.
+- **`floret-kit/`** — the shared Material 3 Expressive kit for the Floret app
+  family, wired in as a git submodule *and* a Gradle composite build
+  (`includeBuild`), so it is compiled from source rather than resolved as a
+  dependency. Pickers, crash plumbing, and locale/time helpers live there;
+  changing them is a pull request against that repository plus a submodule bump.
 
 ## Navigation
 
@@ -81,7 +87,7 @@ exactly like an event tap.
 ## Recurring writes
 
 The provider's invariants drive the design (learned the hard way, verified
-on-device — see plan 03):
+on-device):
 
 - Recurring rows carry `RRULE` + `DURATION` (no `DTEND`); one-off rows
   carry `DTEND`.
@@ -167,6 +173,7 @@ JUnit 5 + Truth + Turbine on the JVM. The seams that make it work:
 `CalendarDataSource` is faked (`FakeCalendarDataSource` records writes),
 mappers parse `ColumnReader`/plain maps instead of cursors, domain logic
 (recurrence, validation, snapshots, write-value building) is pure. CI
-(Gitea Actions) runs `lint test assembleDebug` once per pull request; merging a
+(Forgejo Actions on Codeberg) runs `lint test assembleDebug` once per pull
+request; merging a
 bumped `versionName` to `main` builds, signs, and publishes to the self-hosted
 F-Droid repo and then mints the `vX.Y.Z` tag + release. See docs/RELEASING.md.

docs/BUILDING.md

@@ -1,12 +1,35 @@
 # Building from source
 
 Calendula builds with the standard Android Gradle toolchain — no extra setup
-beyond the SDK and a JDK.
+beyond the SDK, a JDK, and the submodule.
+
+## Clone
+
+```bash
+git clone --recurse-submodules https://codeberg.org/jlmakiola/calendula.git
+```
+
+Calendula depends on **[floret-kit](https://codeberg.org/jlmakiola/floret-kit)**,
+the shared Material 3 Expressive kit, as a git submodule wired in as a Gradle
+composite build (`includeBuild("floret-kit")` in `settings.gradle.kts`) — it is
+compiled from source, not resolved from a repository. A clone without the
+submodule fails to configure. For an existing clone:
+
+```bash
+git submodule update --init --recursive
+```
 
 ## Requirements
 
-- **Android SDK 36+**
-- **JDK 17** — if your default JDK is not 17, set `JAVA_HOME` explicitly.
+- **JDK 17** — not newer; the Android Gradle Plugin requires exactly 17. If your
+  default JDK differs, set `JAVA_HOME` explicitly.
+- **Android SDK** — platform **37** (`compileSdk`) and **build-tools 36.0.0**.
+  `minSdk` is 29, `targetSdk` 36.
+
+The SDK is located via `ANDROID_HOME` (or `ANDROID_SDK_ROOT`), or via a
+gitignored `local.properties` with `sdk.dir`. If you use `local.properties`, note
+that the composite build needs **its own** copy at `floret-kit/local.properties`;
+setting `ANDROID_HOME` covers both builds at once and is the simpler route.
 
 The Gradle wrapper is checked in, so you don't need a system Gradle.
 
@@ -14,11 +37,44 @@ The Gradle wrapper is checked in, so you don't need a system Gradle.
 
 ```bash
 ./gradlew assembleDebug   # debug APK → app/build/outputs/apk/debug/
-./gradlew test            # JVM unit tests
+./gradlew test            # JVM unit tests (JUnit 5 + Truth + Turbine)
 ./gradlew lint            # Android lint
 ```
 
+A single test class, or a pattern:
+
+```bash
+./gradlew testDebugUnitTest --tests "de.jeanlucmakiola.calendula.domain.SimpleRecurrenceTest"
+./gradlew testDebugUnitTest --tests "*SimpleRecurrence*"
+```
+
+Translation-key invariants (stale and orphaned keys are fatal; missing ones are
+not) are checked outside Gradle:
+
+```bash
+python3 scripts/check_translations.py
+```
+
+## What CI runs
+
+`.forgejo/workflows/ci.yaml` reports a single `CI` check per pull request on
+Codeberg: the reproducible-release guard, then `lintDebug`,
+`testDebugUnitTest`, `assembleDebug` and a Trivy filesystem scan. Pull requests
+that touch only docs, F-Droid metadata or the licence skip the Android build and
+still report green.
+
 ## Release builds
 
 Release signing and the publishing pipeline are documented separately in
-[RELEASING.md](RELEASING.md).
+[RELEASING.md](RELEASING.md). To smoke-test a release candidate locally, the
+`releaseTest` build type is an R8-shrunk twin of `release`, debug-signed with its
+own `applicationId` suffix so it installs alongside the real app:
+
+```bash
+scripts/verify-release.sh
+```
+
+## Contributing
+
+See [`../CONTRIBUTING.md`](../CONTRIBUTING.md) for the issue-first workflow,
+which branch to target, and the architectural rules a change is reviewed against.

docs/README.md

@@ -4,19 +4,20 @@ Where to look for what:
 
 | Document | What it is |
 |---|---|
+| [`../CONTRIBUTING.md`](../CONTRIBUTING.md) | How to contribute: issue-first workflow, which branch to target, translations, the rules a change is reviewed against |
+| [`BUILDING.md`](BUILDING.md) | Building from source: submodule, JDK/SDK requirements, Gradle tasks, what CI runs |
 | [`ARCHITECTURE.md`](ARCHITECTURE.md) | Orientation tour: principles, layers, navigation, recurring-write / conflict / reminder pipelines, testing |
+| [`RELEASING.md`](RELEASING.md) | Release process: versioning, the merge-driven pipeline, the two-forge split, secrets, key custody |
 | [`../CHANGELOG.md`](../CHANGELOG.md) | Release history (Keep a Changelog, SemVer) |
 | [`../.planning/ROADMAP.md`](../.planning/ROADMAP.md) | Living roadmap: shipped milestones, current scope, idea backlog |
 | [`../.planning/PROJECT.md`](../.planning/PROJECT.md) | What the project is, stack, naming, infrastructure |
 | [`../.planning/REQUIREMENTS.md`](../.planning/REQUIREMENTS.md) | Requirement checklist per milestone |
 | [`../.planning/STATE.md`](../.planning/STATE.md) | Snapshot of where development currently stands |
-| [`superpowers/specs/`](superpowers/specs/) | The original design spec (2026-06-08) — historical record, not updated |
-| [`superpowers/plans/`](superpowers/plans/) | Per-milestone implementation plans with task checklists — historical record of how each slice was built, including provider lessons learned |
+| [`design/`](design/) | Per-feature design notes kept for features whose provider behaviour is worth recording |
 | [`../fastlane/metadata/android/`](../fastlane/metadata/android/) | Store metadata (single source of truth): descriptions, title, icon, screenshots (DE + EN). Harvested directly by the official F-Droid repo; transformed into the self-hosted repo layout at release time by [`../scripts/fastlane_to_fdroid_localized.sh`](../scripts/fastlane_to_fdroid_localized.sh) |
 | [`../fdroid-metadata/`](../fdroid-metadata/) | App-level F-Droid control file (`*.yml`: Categories, License, links) for the self-hosted repo's `fdroid update` |
-| [`fdroid-official/`](fdroid-official/) | Draft recipe + notes for publishing to the **official** F-Droid repo (reproducible build + developer-signed binary) |
+| [`fdroid-official/`](fdroid-official/) | Recipe + notes for publishing to the **official** F-Droid repo (reproducible build + developer-signed binary) |
 
-Conventions: plans and specs under `superpowers/` are point-in-time
-artifacts of the agentic workflow that built each milestone — they get
-status updates but are never rewritten. The `.planning/` files are living
-documents and should stay current.
+Conventions: the `.planning/` files are living documents and should stay current.
+`ARCHITECTURE.md` is the authoritative orientation tour — it is updated with the
+code, and is the right place for a lesson learned about the calendar provider.

docs/RELEASING.md

@@ -73,7 +73,8 @@ Published version codes so far: `v0.1.0`→100 … `v1.0.0`→10000 … `v2.0.0`
 CI and release are split so a change is built once on its PR and only does
 release work when a merge actually cuts a release:
 
-- **`ci.yaml`** (on `pull_request`) — lint + unit tests + a debug assemble (and
+- **`ci.yaml`** (`.forgejo/workflows/`, on `pull_request`, **Codeberg**) — lint +
+  unit tests + a debug assemble (and
   a Trivy scan), once per PR. Docs/metadata-only PRs skip the Android build but
   still report a green `CI` check.
 - **`release.yaml`** (on push to `main`, plus `workflow_dispatch`) — a cheap
@@ -91,9 +92,9 @@ release work when a merge actually cuts a release:
 
 Alongside F-Droid, each release is mirrored to the Codeberg repo
 (`jlmakiola/calendula`) as a plain download for users who don't want F-Droid.
-Gitea already **push-mirrors** branches and tags to Codeberg, but releases
-aren't git objects and don't sync, so the pipeline creates the release over the
-Codeberg API and attaches `calendula_v<version>.apk` + its `.sha256`. It's the
+Codeberg **push-mirrors** branches and tags to Gitea, but releases aren't git
+objects and don't sync in either direction, so the pipeline creates the release
+over the Codeberg API and attaches `calendula_v<version>.apk` + its `.sha256`. It's the
 same APK the F-Droid repo serves (same **app key**), so it adds no trust
 surface. The step is best-effort: a Codeberg outage never fails an
 already-published F-Droid release, and it skips cleanly if `CODEBERG_RELEASE_TOKEN` is
@@ -109,6 +110,39 @@ build, the version bump, and tag/release creation, and just re-signs the
 existing F-Droid index with the configured repo key and re-uploads. Use this
 for key rotation or repo recovery without publishing a new app version.
 
+## Two forges, one repo
+
+**Codeberg (`jlmakiola/calendula`) is canonical** — git, issues, PRs, tags and
+releases. The self-hosted Gitea instance is build infrastructure: it holds the
+signing key, publishes the F-Droid repo, and runs the release pipeline. Codeberg
+push-mirrors `main` and tags to Gitea, and a bumped `versionName` arriving there
+triggers `release.yaml` exactly as before.
+
+Workflows are separated by **directory**, not by conditionals. Forgejo looks in
+`.forgejo/workflows` → `.gitea/workflows` → `.github/workflows` and stops at the
+first that exists; Gitea doesn't know `.forgejo/` at all:
+
+| Directory | Runs on | Contains | Secrets |
+| --- | --- | --- | --- |
+| `.forgejo/workflows/` | Codeberg | `ci.yaml`, `translations.yaml` | **none** |
+| `.gitea/workflows/` | Gitea | `release.yaml`, `renovate.yml` | signing key, F-Droid, Play, bot tokens |
+
+The line is drawn at **secrets, not at CI-vs-release**. That's what makes fork
+PRs safe: everything a contributor can trigger lives in `.forgejo/` and can
+reference no secret. Renovate stays on the Gitea runner *even though it opens
+PRs on Codeberg* — it talks to Codeberg's API rather than moving its token onto
+the contributor-facing runner.
+
+Two consequences worth remembering:
+
+- **`detect` reads tags from Codeberg**, not from the Gitea instance it runs on.
+  Push mirroring is `git push --mirror`, so a tag minted on Gitea is deleted by
+  the next sync until the Codeberg tag push propagates back. Asking Gitea inside
+  that window would re-cut a shipped release.
+- **Any ref that exists only on Gitea gets deleted** by the mirror. That's
+  correct under Codeberg-canonical, but don't debug a "vanished" branch without
+  remembering it.
+
 ## Secrets (Gitea → repo Settings → Actions → Secrets)
 
 | Secret | Purpose |

docs/fdroid-official/de.jeanlucmakiola.calendula.yml

@@ -18,9 +18,9 @@ Categories:
   - Calendar & Agenda
 License: MIT
 AuthorName: Jean-Luc Makiola
-SourceCode: https://gitea.jeanlucmakiola.de/makiolaj/calendula
-IssueTracker: https://gitea.jeanlucmakiola.de/makiolaj/calendula/issues
-Changelog: https://gitea.jeanlucmakiola.de/makiolaj/calendula/src/branch/main/CHANGELOG.md
+SourceCode: https://codeberg.org/jlmakiola/calendula
+IssueTracker: https://codeberg.org/jlmakiola/calendula/issues
+Changelog: https://codeberg.org/jlmakiola/calendula/src/branch/main/CHANGELOG.md
 Donate: https://ko-fi.com/jeanlucmakiola
 
 AutoName: Calendula

fdroid-metadata/de.jeanlucmakiola.calendula.yml

@@ -6,6 +6,6 @@ Summary: A modern Material 3 Expressive calendar for Android.
 Categories:
   - Time
 
-SourceCode: https://gitea.jeanlucmakiola.de/makiolaj/calendula
-IssueTracker: https://gitea.jeanlucmakiola.de/makiolaj/calendula/issues
+SourceCode: https://codeberg.org/jlmakiola/calendula
+IssueTracker: https://codeberg.org/jlmakiola/calendula/issues
 Donate: https://ko-fi.com/jeanlucmakiola

renovate.json5

@@ -7,6 +7,23 @@
     ":semanticCommits",
   ],
 
+  // `config:recommended` brings in mergeConfidence:age-confidence-badges, whose
+  // Age column is a Mend badge. Mend's Merge Confidence index only covers Maven
+  // Central: org.jetbrains.kotlin, junit, truth, turbine et al resolve, but
+  // every androidx/compose artifact lives on Google's Maven repo and comes back
+  // as a grey UNKNOWN — i.e. most of this project. Renovate already knows the
+  // real answer, since it derives release timestamps itself for the
+  // minimumReleaseAge rules below (Google Maven serves `last-modified` on its
+  // POMs), so take the age from there and leave Mend to the Confidence column,
+  // which still carries signal for the Maven Central half.
+  prBodyDefinitions: {
+    Age: "{{#if releaseTimestamp}}{{{newVersionAgeInDays}}} d{{else}}unknown{{/if}}",
+  },
+  // Default heading links to the Merge Confidence docs; this column is ours now.
+  prBodyHeadingDefinitions: {
+    Age: "Age",
+  },
+
   // No automerge: a dependency bump goes through the same review (and, for
   // anything touching the build, the same on-device check) as a feature
   // before it can ride a release — see docs/RELEASING.md and the
@@ -15,6 +32,22 @@
 
   // One reviewable surface; the dashboard issue lists everything pending.
   dependencyDashboard: true,
+
+  // The cooling-off periods below are advisory, not a gate. "flexible" still
+  // prefers a version that has cleared its window, but when every candidate is
+  // too young it opens the PR at the newest one anyway, so merging early stays
+  // a judgement call. (The default, "strict", would suppress the PR entirely
+  // until a release aged in.) A still-young branch carries a yellow
+  // `renovate/stability-days` check so it's visible which side of the line
+  // it's on; with automerge off, nothing acts on that check by itself.
+  //
+  // NOT "none": that short-circuits the candidate loop in filter-checks.ts, and
+  // that loop is what calls postprocessRelease — the only thing that fetches a
+  // Maven artifact's Last-Modified header. Skipping it leaves releaseTimestamp
+  // unset, which empties the Age column and quietly makes minimumReleaseAge and
+  // the stability check no-ops, since both need that timestamp to compare.
+  internalChecksFilter: "flexible",
+
   labels: ["dependencies"],
   prConcurrentLimit: 5,
   prHourlyLimit: 0,
@@ -25,11 +58,28 @@
 
   // Gitea Actions workflows live under .gitea/workflows, not .github — extend
   // the github-actions manager (same syntax) to watch them too.
+  // `fileMatch` is deprecated; the replacement takes the regex delimited, and
+  // Renovate's config migration was already rewriting this on every run.
   "github-actions": {
-    fileMatch: ["^\\.gitea/workflows/[^/]+\\.ya?ml$"],
+    managerFilePatterns: ["/^\\.gitea/workflows/[^/]+\\.ya?ml$/"],
   },
 
   packageRules: [
+    // Cooling-off period, scaled by blast radius: how long a release should
+    // have been out (and un-yanked, un-hotfixed) before it's considered
+    // settled. Advisory only — see `internalChecksFilter` above.
+    {
+      matchUpdateTypes: ["major"],
+      minimumReleaseAge: "30 days",
+    },
+    {
+      matchUpdateTypes: ["minor"],
+      minimumReleaseAge: "20 days",
+    },
+    {
+      matchUpdateTypes: ["patch", "digest", "pin", "rollback"],
+      minimumReleaseAge: "10 days",
+    },
     // material3 is deliberately pinned to the 1.5 *alpha* line for the
     // Expressive APIs (see gradle/libs.versions.toml). Follow the alpha train
     // but keep it in its own PR, reviewed in isolation; revisit the pin when
@@ -52,5 +102,18 @@
       ],
       groupName: "test dependencies",
     },
+    // Last word on the PR table. The merge-confidence preset sets prBodyColumns
+    // from inside a packageRule of its own, and only for the datasources Mend
+    // supports — so a plain top-level prBodyColumns would lose to it for maven
+    // deps, and the Gradle wrapper / Actions / container bumps would keep the
+    // default columns and show no age at all. A rule declared after it wins,
+    // and gives every PR the same table.
+    // "Pending" earns its place under a flexible filter: when the bump lands on
+    // a version that has cleared its window but a newer one hasn't, that newer
+    // version is named here rather than silently withheld.
+    {
+      matchPackageNames: ["*"],
+      prBodyColumns: ["Package", "Type", "Change", "Age", "Pending", "Confidence"],
+    },
   ],
 }