Add RIPPR.md explaining the source snapshot and history bundle

Lives at the repo root rather than inside rippr-src/, because refreshing
the snapshot deletes and re-exports that directory wholesale - which
already ate an earlier copy of this note.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

RIPPR.md

@@ -0,0 +1,54 @@
+# Rippr — copies held here
+
+Rippr is a native Android GPS ride recorder for motorcycles. Its canonical repo is
+`~/dojo/rippr`, which **has no git remote** — it exists only on that machine, so the
+bundle below is the only off-machine copy of its history.
+
+**Snapshot taken at:** `46a0726` — "Document the whole project: README, architecture, v1 history, v3 backlog" (19 commits)
+
+## What is here
+
+| File | Purpose |
+|---|---|
+| `rippr-src/` | Browsable source, exported with `git archive HEAD`. No history; will drift. |
+| `rippr-full-history.bundle` | Full git history. The actual backup. |
+| `rippr-2.0.1-debug.apk` | Latest installable build (debug-signed) |
+| `rippr-2.0-debug.apk`, `rippr-1.0-debug.apk` | Previous builds |
+
+`rippr-src/` contains tracked files only — no build outputs, no `local.properties`, no
+nested `.git`.
+
+## Restoring the full repo
+
+```bash
+git clone rippr-full-history.bundle rippr
+cd rippr
+echo "sdk.dir=$HOME/Library/Android/sdk" > local.properties
+./gradlew assembleDebug
+```
+
+Needs **JDK 17–21** — AGP does not support 25 — and the Android SDK with platform 35 and
+build-tools 35.
+
+## Where to start reading
+
+Inside `rippr-src/`:
+
+- `README.md` — what the app is and its current state
+- `docs/ARCHITECTURE.md` — the design decisions and why
+- `docs/v3/BACKLOG.md` — known gaps, deferred work, what must not regress
+- `docs/TESTING.md` — especially "What the emulator cannot verify"
+- `docs/v2/PROGRESS.md` — every bug found during v2 development
+
+## Keeping these current
+
+```bash
+cd ~/dojo/samplez
+rm -rf rippr-src && mkdir rippr-src
+git -C ~/dojo/rippr archive HEAD | tar -x -C rippr-src
+(cd ~/dojo/rippr && git bundle create /tmp/rb.bundle --all) && mv /tmp/rb.bundle rippr-full-history.bundle
+git bundle verify rippr-full-history.bundle
+```
+
+Note the export wipes `rippr-src/` wholesale, which is why this file lives at the repo
+root rather than inside it.