diff --git a/wiki/architecture.md b/wiki/architecture.md
index f26aec29..a0c2ab66 100644
--- a/wiki/architecture.md
+++ b/wiki/architecture.md
@@ -48,7 +48,7 @@ truth.py generates       diff_truth.py         export_native.py
 
 Pipeline runs all steps in sequence: DB, data dirs, MAME/FBNeo hashes,
 verify, packs, install manifests, target manifests, consistency check,
-README, site. See [tools](tools.md) for the full pipeline reference.
+pack integrity, README, site. See [tools](tools.md) for the full pipeline reference.
 
 ```mermaid
 graph LR
@@ -59,12 +59,14 @@ graph LR
     E --> F[install manifests]
     F --> G[target manifests]
     G --> H[consistency check]
-    H --> I[generate_readme]
+    H --> H2[pack integrity]
+    H2 --> I[generate_readme]
     I --> J[generate_site]
 
     style A fill:#2d333b,stroke:#adbac7,color:#adbac7
     style D fill:#2d333b,stroke:#adbac7,color:#adbac7
     style E fill:#2d333b,stroke:#adbac7,color:#adbac7
+    style H2 fill:#2d333b,stroke:#adbac7,color:#adbac7
     style J fill:#2d333b,stroke:#adbac7,color:#adbac7
 ```
 
@@ -234,14 +236,15 @@ user's platform, filter files by hardware target, and download with SHA1 verific
 
 ## Tests
 
-4 test files with synthetic fixtures:
+5 test files, 249 tests total:
 
-| File | Coverage |
-|------|----------|
-| `test_e2e.py` | file resolution, verification, severity, cross-reference, aliases, inheritance, shared groups, data dirs, storage tiers, HLE, launchers, platform grouping, core resolution, target filtering, truth/diff, exporters |
-| `test_mame_parser.py` | BIOS root set detection, ROM block parsing, macro expansion |
-| `test_fbneo_parser.py` | BIOS set detection, ROM info parsing |
-| `test_hash_merge.py` | MAME/FBNeo YAML merge, diff detection |
+| File | Tests | Coverage |
+|------|-------|----------|
+| `test_e2e.py` | 186 | file resolution, verification, severity, cross-reference, aliases, inheritance, shared groups, data dirs, storage tiers, HLE, launchers, platform grouping, core resolution, target filtering, truth/diff, exporters |
+| `test_pack_integrity.py` | 8 | extract ZIP packs to disk, verify paths + hashes per platform's native mode |
+| `test_mame_parser.py` | 22 | BIOS root set detection, ROM block parsing, macro expansion |
+| `test_fbneo_parser.py` | 16 | BIOS set detection, ROM info parsing |
+| `test_hash_merge.py` | 17 | MAME/FBNeo YAML merge, diff detection |
 
 ```bash
 python -m unittest tests.test_e2e -v
diff --git a/wiki/testing-guide.md b/wiki/testing-guide.md
index 6cc59c32..2db7525f 100644
--- a/wiki/testing-guide.md
+++ b/wiki/testing-guide.md
@@ -11,6 +11,7 @@ Run a single test module:
 
 ```bash
 python -m unittest tests.test_e2e -v
+python -m unittest tests.test_pack_integrity -v
 python -m unittest tests.test_mame_parser -v
 python -m unittest tests.test_fbneo_parser -v
 python -m unittest tests.test_hash_merge -v
@@ -119,6 +120,30 @@ def test_42_my_new_behavior(self):
     self.assertEqual(result[0]["status"], Status.OK)
 ```
 
+### test_pack_integrity.py
+
+End-to-end pack verification. Extracts each platform ZIP to `tmp/` (in the
+repo, not `/tmp` which is tmpfs on WSL) and verifies that every file declared
+in the platform YAML:
+
+1. Exists at the correct path on disk after extraction
+2. Has the correct hash per the platform's native verification mode
+
+Handles inner ZIP verification for MAME/FBNeo ROM sets (checkInsideZip,
+md5_composite, inner ROM MD5) and path collision deduplication.
+
+8 tests (one per active platform): RetroArch, Batocera, BizHawk, EmuDeck,
+Recalbox, RetroBat, RetroDECK, RomM.
+
+```bash
+python -m unittest tests.test_pack_integrity -v
+# or via CLI:
+python scripts/generate_pack.py --all --verify-packs --output-dir dist/
+```
+
+Integrated as pipeline step 6/8 (runs after consistency check, before
+README generation). Requires packs in `dist/` — skip with `--skip-packs`.
+
 ## Verification discipline
 
 The test suite is one layer of verification. The full quality gate is:
@@ -127,6 +152,7 @@ The test suite is one layer of verification. The full quality gate is:
 2. The full pipeline completes without error (`python scripts/pipeline.py --offline`)
 3. No unexpected CRITICAL entries in the verify output
 4. Pack file counts match verification file counts (consistency check)
+5. Pack integrity passes (every declared file extractable with correct hash)
 
 If a change passes tests but breaks the pipeline, it's worth investigating before merging. Similarly, new CRITICAL entries in the verify output after a change usually indicate something to look into. The pipeline is designed so that all steps agree: if verify reports N files for a platform, the pack should contain exactly N files.
 
diff --git a/wiki/tools.md b/wiki/tools.md
index 921a2e18..25d5c9ae 100644
--- a/wiki/tools.md
+++ b/wiki/tools.md
@@ -7,7 +7,7 @@ All tools are Python scripts in `scripts/`. Single dependency: `pyyaml`.
 Run everything in sequence:
 
 ```bash
-python scripts/pipeline.py --offline              # DB + verify + packs + manifests + readme + site
+python scripts/pipeline.py --offline              # DB + verify + packs + manifests + integrity + readme + site
 python scripts/pipeline.py --offline --skip-packs  # DB + verify only
 python scripts/pipeline.py --offline --skip-docs   # skip readme + site generation
 python scripts/pipeline.py --offline --target switch  # filter by hardware target
@@ -20,21 +20,22 @@ Pipeline steps:
 
 | Step | Description | Skipped by |
 |------|-------------|------------|
-| 1/9 | Generate database | - |
-| 2/9 | Refresh data directories | `--offline` |
+| 1/8 | Generate database | - |
+| 2/8 | Refresh data directories | `--offline` |
 | 2a | Refresh MAME BIOS hashes | `--offline` |
 | 2a2 | Refresh FBNeo BIOS hashes | `--offline` |
 | 2b | Check buildbot staleness | only with `--check-buildbot` |
 | 2c | Generate truth YAMLs | only with `--with-truth` / `--with-export` |
 | 2d | Diff truth vs scraped | only with `--with-truth` / `--with-export` |
 | 2e | Export native formats | only with `--with-export` |
-| 3/9 | Verify all platforms | - |
-| 4/9 | Generate packs | `--skip-packs` |
+| 3/8 | Verify all platforms | - |
+| 4/8 | Generate packs | `--skip-packs` |
 | 4b | Generate install manifests | `--skip-packs` |
 | 4c | Generate target manifests | `--skip-packs` |
-| 5/9 | Consistency check | if verify or pack skipped |
-| 8/9 | Generate README | `--skip-docs` |
-| 9/9 | Generate site | `--skip-docs` |
+| 5/8 | Consistency check | if verify or pack skipped |
+| 6/8 | Pack integrity (extract + hash) | `--skip-packs` |
+| 7/8 | Generate README | `--skip-docs` |
+| 8/8 | Generate site | `--skip-docs` |
 
 ## Individual tools
 
@@ -132,6 +133,8 @@ Reports files that cores need beyond what platforms declare.
 python scripts/cross_reference.py                    # all
 python scripts/cross_reference.py --emulator dolphin  # single
 python scripts/cross_reference.py --emulator dolphin --json  # JSON output
+python scripts/cross_reference.py --platform batocera        # single platform
+python scripts/cross_reference.py --platform retroarch --target switch
 ```
 
 ### truth.py, generate_truth.py, diff_truth.py
@@ -168,6 +171,8 @@ from upstream repositories into `data/`.
 ```bash
 python scripts/refresh_data_dirs.py
 python scripts/refresh_data_dirs.py --key dolphin-sys --force
+python scripts/refresh_data_dirs.py --dry-run              # preview without downloading
+python scripts/refresh_data_dirs.py --platform batocera    # single platform only
 ```
 
 ### Other tools