feat: parse bounded FSSHTTPB packages

tests/fixtures/README.md

@@ -38,6 +38,27 @@ and does not change the underlying file's licence.
 Tests verify the package hash, all seven paths, the native `.one` magic for
 every section, section parse statuses, and representative title/text output.
 
+## `joplin-quick-notes-fsshttp.one.b64`
+
+- Immediate reviewed source: `onenote.rs`
+  [`crates/parser/tests/samples/joplin/Simple notebook/Quick Notes.one`](https://github.com/msiemens/onenote.rs/blob/5138a39a3f4e72b840932f9872fecde52fa9da60/crates/parser/tests/samples/joplin/Simple%20notebook/Quick%20Notes.one)
+  at the parser reference revision
+  `5138a39a3f4e72b840932f9872fecde52fa9da60`; introduced there by commit
+  `3011a1f0f2a13288aa8ac366f783adc0673e4989` as test data from Joplin.
+- Upstream attribution recorded alongside the source fixture: Joplin,
+  copyright Laurent Cozic, AGPL-3.0-or-later. The full licence is retained in
+  `LICENSES/AGPL-3.0.txt`.
+- Decoded size: 17,197 bytes.
+- Decoded SHA-256:
+  `5e501ef5f539cd2f149786f57659be9d0762913d863a69867deb9c8e8c43efe2`.
+- Golden package expectation: FSSHTTPB package-store section with one Storage
+  Index, one Storage Manifest, four Cell Manifests, nine Revision Manifests,
+  and nine Object Groups. This fixture contains no Data Element Fragments or
+  Object Data BLOB elements.
+
+Tests retain the exact hash, validate the package envelope and element counts,
+and exercise truncated, malformed, padding, and configured-limit failures.
+
 ## Inline rust-cab CAB fixtures
 
 `src/onenote/onepkg/cabinet.test.ts` contains byte-for-byte test arrays copied