clean up bootstrapping stuff from CI, update README

.forgejo/workflows/derive.yml

@@ -23,7 +23,6 @@ jobs:
       STEAM_APPS: /home/cs2/.steam/SteamApps
       STEAM_USER: source2rosetta
       RELEASE_BASE: ${{ github.server_url }}/${{ github.repository }}/releases/download
-      BOOTSTRAP_DIR: /home/cs2/rosetta-bootstrap
     steps:
       - uses: actions/checkout@v6.0.2
 
@@ -56,25 +55,10 @@ jobs:
       - name: Fetch the previous model + seed (the two non-user-facing release artifacts)
         run: |
           mkdir -p in dist work
-          code=$(curl -sSL -o in/model.gz -w '%{http_code}' "$RELEASE_BASE/$GAME-latest/model-$GAME.json.gz" || echo 000)
-          if [ "$code" = "200" ]; then
-            gunzip -c in/model.gz > "in/model-$GAME.json"
-            echo "model: from the $GAME-latest release"
-          elif [ "$code" = "404" ] && [ -f "${BOOTSTRAP_DIR:-}/model-$GAME.json" ]; then
-            # First run only. ONLY a genuine 404 falls back: on a transient failure we must NOT quietly
-            # re-derive from a stale on-disk model and then overwrite `latest` with the result.
-            cp "${BOOTSTRAP_DIR}/model-$GAME.json" "in/model-$GAME.json"
-            echo "model: BOOTSTRAP from $BOOTSTRAP_DIR — clear BOOTSTRAP_DIR once this run has published"
-          else
-            echo "model fetch failed (HTTP $code) and no bootstrap copy at '${BOOTSTRAP_DIR:-<unset>}/model-$GAME.json' — refusing to derive"
-            exit 1
-          fi
-          if curl -fsSL -o in/seed.gz "$RELEASE_BASE/$GAME-latest/seed-$GAME.json.gz"; then
-            gunzip -c in/seed.gz > "mappings/seed-$GAME.json"
-            echo "seed: from the $GAME-latest release"
-          else
-            echo "seed: none published yet — using the repo's mappings/seed-$GAME.json"
-          fi
+          curl -fsSL -o in/model.gz "$RELEASE_BASE/$GAME-latest/model-$GAME.json.gz"
+          gunzip -c in/model.gz > "in/model-$GAME.json"
+          curl -fsSL -o in/seed.gz "$RELEASE_BASE/$GAME-latest/seed-$GAME.json.gz"
+          gunzip -c in/seed.gz > "in/seed-$GAME.json"
 
       - name: Produce — derive + validate-live + typed netvars + fold model N -> N+1
         run: |
@@ -84,14 +68,13 @@ jobs:
           # would be rejected as not-newer. Buildids are monotonic and sort after the corpus's date labels.
           ln -sfn "$GAME_DIR" "work/$BUILDID"
           ./target/release/source2rosetta --game "$GAME" produce \
-            --seed         "mappings/seed-$GAME.json" \
+            --seed         "in/seed-$GAME.json" \
             --corpus-model "in/model-$GAME.json" \
             --target       "work/$BUILDID" \
             --game-dir     "$GAME_DIR" \
             --version      "$GAME-$BUILDID-0" \
-            --wait         300 \
             --out-dir      dist
-          cp "mappings/seed-$GAME.json" "dist/seed-$GAME.json"
+          cp "in/seed-$GAME.json" "dist/seed-$GAME.json"
 
       - name: Compress the internal artifacts for release
         run: |