Move the canonical forge to Codeberg, and add Renovate + Weblate (#2)

Makes Codeberg canonical for git, issues, PRs, tags and releases. The self-hosted Gitea instance stays build infrastructure: signing key, F-Droid publishing, release pipeline. Ports the setup Calendula already runs on, adapted where Agendula genuinely differs.

**This PR is its own test.** It is the first PR opened on Codeberg, so a green `CI` check proves the new runner works *and* that the submodule resolves from its new home.

### 1 · Workflows split by directory

Forgejo's lookup is first-match-wins across `.forgejo/` → `.gitea/` → `.github/`, and Gitea cannot see `.forgejo/` at all. So each forge sees exactly one set, with no duplicated files and no expression to keep in sync:

| Directory | Runs on | Contains | Secrets |
| --- | --- | --- | --- |
| `.forgejo/workflows/` | Codeberg | `ci.yaml`, `translations.yaml` | **none** |
| `.gitea/workflows/` | Gitea | `release.yaml`, `renovate.yml` | all of them |

The line is drawn at **secrets, not CI-vs-release** — that is what makes fork PRs safe. Renovate deliberately does *not* move despite opening PRs here; it keeps running where its token already lives and merely talks to Codeberg's API.

CI also gains three fixes: an explicit `SKIP_RE` skip-list that names the build-relevant files in the log, base-ref normalisation, and a fully-qualified `android-actions/setup-android` — Codeberg resolves bare `uses:` refs against `data.forgejo.org`, which does not carry that action.

### 2 · Three release-pipeline safety changes

- `detect` and the Renovate job get an explicit `repository_owner` guard. The directory split only holds while `.forgejo/` is non-empty; empty it and Codeberg would fall back to `.gitea/` and start running these on the contributor-facing runner, without secrets.
- `detect` now 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 reports "no tag" for an already-shipped release and would cut it twice. It also now fails on any status other than 200/404 rather than reading a transient error as "no tag": a failed job is recoverable, a duplicate release is not.
- **The Codeberg publish step pushes the tag itself** instead of waiting for it to arrive by mirror. That wait was correct while Gitea mirrored *to* Codeberg; under Codeberg-canonical the mirror runs the other way and it would never resolve. Attaching the release to an already-pushed ref (no `target_commitish`) is what avoids the empty-bodied 500s, and the create call retries with backoff because Codeberg 500s on a tag it has only just received. The step stays **fail-loud**, not `continue-on-error` — it reported green through 0.2.1–0.3.2 while never once publishing, and that must not be possible again.

### 3 · Renovate

`renovate.json5` plus a Gitea-side job targeting Codeberg's API. `managerFilePatterns` covers **both** workflow directories, so the pinned Renovate image tag and the action versions in either file keep getting bumped.

Needs two new Gitea secrets: `RENOVATE_TOKEN` (Codeberg bot, repo read/write + PR scope) and `GITHUB_COM_TOKEN` (read-only github.com PAT, for changelog lookups).

### 4 · Weblate

A parity check (`scripts/check_translations.py`) runs on every PR without a path filter, so the required `Translations` status is always reported. Partial translations are expected, so `MissingTranslation` and `MissingQuantity` become informational — `ExtraTranslation` stays fatal. Agendula had no `lint` block at all, so the first locale to land would otherwise have failed the build.

**Settings → App language** now opens a picker carrying a "Help translate" header. That is why it drops floret-kit's `LanguagePickerRow` for a local row: the shared recipe has no `header` slot, and the framing is app-specific rather than a family primitive.

### 5 · Links repointed

In-app Source / License / report-issue URLs, F-Droid metadata, README (now with a Codeberg CI badge), and the docs.

`floret-kit` follows suit — `.gitmodules` points at `codeberg.org/jlmakiola/floret-kit`, so a clone no longer needs to reach the personal Gitea instance to resolve it. The Gitea copy is **kept**: every existing tag records the old submodule URL, so rebuilds of past releases still resolve.

### 6 · Housekeeping

Drops `release-notes.md` — a release-pipeline scratch file that got committed — and gitignores the five others the release job writes into the workspace.

### Not in this PR

The Codeberg → Gitea push mirror, the Weblate component, and the Codeberg bot account (all browser-side). Until the mirror is flipped, merging this does **not** reach the Gitea runner.

Co-authored-by: Jean-Luc Makiola <business@jeanlucmakiola.de>
Reviewed-on: https://codeberg.org/jlmakiola/agendula/pulls/2

renovate.json5

@@ -0,0 +1,122 @@
+{
+  $schema: "https://docs.renovatebot.com/renovate-schema.json",
+
+  extends: [
+    "config:recommended",
+    // chore(deps): … — match the repo's conventional-commit style.
+    ":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 mandatory
+  // `scripts/verify-release.sh` gate.
+  automerge: false,
+
+  // 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,
+
+  // Cadence is owned by the Gitea Actions cron (.gitea/workflows/renovate.yml,
+  // Mondays) — no internal `schedule` here, so the two don't double-gate and
+  // silently skip a run.
+
+  // Workflows are split by forge and neither directory is .github: CI lives in
+  // .forgejo/workflows (Codeberg) and the release/renovate jobs in
+  // .gitea/workflows (Gitea). Extend the github-actions manager (same syntax)
+  // to watch both — otherwise the pinned Renovate image tag and the action
+  // versions in either file would never get bumped. See docs/RELEASING.md.
+  // `fileMatch` is deprecated; the replacement takes the regex delimited, and
+  // Renovate's config migration was already rewriting this on every run.
+  "github-actions": {
+    managerFilePatterns: ["/^\\.(gitea|forgejo)/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
+    // 1.5.0 stable lands.
+    {
+      matchPackageNames: ["androidx.compose.material3:material3"],
+      ignoreUnstable: false,
+      groupName: "material3 (alpha)",
+    },
+    // Test-only deps: group into one low-noise PR.
+    {
+      matchPackageNames: [
+        "org.junit.jupiter:**",
+        "org.junit.platform:**",
+        "com.google.truth:**",
+        "app.cash.turbine:**",
+        "androidx.test:**",
+        "androidx.test.espresso:**",
+        "androidx.test.ext:**",
+      ],
+      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"],
+    },
+  ],
+}