Fix standard-font previews in the Playground and local project examples

.github/workflows/docs.yml

@@ -132,7 +132,7 @@ jobs:
           retention-days: 7
       - name: Verify downloadable playground projects
         run: |
-          python -m pip install fullbleed==2.5.8
+          python -m pip install fullbleed==2.5.11 pypdf==6.19.0
           node tools/verify_project_export.mjs
           python -I tools/verify_project_export.py
       - uses: actions/upload-artifact@v4

docs/assets/playground/app.js

@@ -37,7 +37,7 @@ function clearOutput() {
   el('placeholder').hidden = false;
   el('placeholder').textContent = 'Render your document to see it here.';
   el('page-count').textContent = '—';
-  el('result').textContent = 'Fullbleed 2.5.8';
+  el('result').textContent = 'Fullbleed 2.5.11';
   el('previous').disabled = el('next').disabled = true;
   setDownload(false);
 }

docs/getting-started/rust.md

@@ -15,7 +15,7 @@ With Rust 1.85 or newer and a working native Rust toolchain:
 ```bash
 cargo new invoice-demo
 cd invoice-demo
-cargo add fullbleed@=2.5.8
+cargo add fullbleed@=2.5.11
 ```
 
 Replace `src/main.rs` with:
@@ -67,7 +67,7 @@ cargo run --release --locked --manifest-path examples/rust/Cargo.toml --bin from
 Open `output/rust-invoice/document.pdf` or `page-1.png` in the same directory.
 Replace both `invoice` input filenames with `report` for the report design,
 and choose a new output directory. The report produces three
-pages. These examples pin Fullbleed 2.5.8 and include a Cargo lockfile.
+pages. These examples pin Fullbleed 2.5.11 and include a Cargo lockfile.
 
 For the service notice or your own edits, choose **Download project** in the
 playground. Extract the ZIP into `my-project` in this repository, then run:
@@ -115,7 +115,7 @@ designed example and downloaded playground projects use the same path.
 
 Use [the latest hosted Rust API reference](https://docs.rs/fullbleed/latest/fullbleed/)
 for `FullBleed`, its builder, compiled templates, and document types. The
-[2.5.8 source](https://github.com/fullbleed-engine/fullbleed-official/blob/v2.5.8/src/lib.rs)
+[2.5.11 source](https://github.com/fullbleed-engine/fullbleed-official/blob/v2.5.11/src/lib.rs)
 matches the version pinned by these examples. Check
 [CSS coverage](../css-coverage.md) before adapting a web layout, and inspect
 your actual output when changing fonts or content. These examples use trusted

docs/index.md

@@ -153,7 +153,7 @@ Pick your application stack. Generate a PDF locally or download one from the bro
     ```bash
     cargo new invoice-demo
     cd invoice-demo
-    cargo add fullbleed@=2.5.8
+    cargo add fullbleed@=2.5.11
     ```
 
     Replace `src/main.rs` with:
@@ -265,6 +265,6 @@ Fullbleed uses static HTML/CSS as its layout language. Read the [CSS coverage](c
 
 ## Open source, with inspectable evidence
 
-Fullbleed is [MIT licensed](https://github.com/fullbleed-engine/fullbleed-official/blob/master/LICENSE). The [2.5.8 release](https://github.com/fullbleed-engine/fullbleed-official/releases/tag/v2.5.8) includes downloadable wheels and retained engineering evidence. See the [smaller-PDF before/after check](guides/pdf-size.md) and the [performance report](guides/performance.md) for specific measured workloads and their limits.
+Fullbleed is [MIT licensed](https://github.com/fullbleed-engine/fullbleed-official/blob/master/LICENSE). The [2.5.11 release](https://github.com/fullbleed-engine/fullbleed-official/releases/tag/v2.5.11) includes downloadable wheels and retained engineering evidence. See the [smaller-PDF before/after check](guides/pdf-size.md) and the [performance report](guides/performance.md) for specific measured workloads and their limits.
 
 [Read the Python API](engine/pdf-engine.md) · [Set up a coding agent](guides/ai-agents.md) · [Report an issue](https://github.com/fullbleed-engine/fullbleed-official/issues) · [Support Fullbleed](support.md)

docs/playground.md

@@ -6,7 +6,7 @@ hide:
   - toc
 ---
 
-<link rel="stylesheet" href="../assets/playground/playground.css?v=engine-258">
+<link rel="stylesheet" href="../assets/playground/playground.css?v=engine-2511">
 
 <div class="fb-playground" id="playground">
   <div class="pg-intro">
@@ -28,7 +28,7 @@ hide:
     <section class="pg-output" aria-label="PDF preview" aria-busy="true">
       <div class="pg-pane-top"><span class="pg-output-label">THE PRINTED PAGE</span><div class="pg-pagination"><button id="pg-previous" aria-label="Previous PDF page" disabled>←</button><span id="pg-page-count">—</span><button id="pg-next" aria-label="Next PDF page" disabled>→</button></div></div>
       <div class="pg-canvas"><p id="pg-placeholder">Preparing your first PDF…</p><img id="pg-preview" alt="" hidden></div>
-      <div class="pg-output-foot"><span id="pg-result">Fullbleed 2.5.8</span><a href="../examples/">Explore the full gallery ↗</a></div>
+      <div class="pg-output-foot"><span id="pg-result">Fullbleed 2.5.11</span><a href="../examples/">Explore the full gallery ↗</a></div>
     </section>
   </div>
   <p id="pg-status" class="pg-status" role="status" aria-live="polite">Loading the examples…</p>
@@ -51,7 +51,7 @@ python render.py
 
 Open `output/document.pdf`; PNG previews are in `output/preview/`. Edit
 `input.html` or `style.css`, then run the script again. The project uses Fullbleed
-2.5.8 to match this demo. Use a Python 3.10 or newer virtual environment. The ZIP
+2.5.11 to match this demo. Use a Python 3.10 or newer virtual environment. The ZIP
 is assembled on your device, using the source present when you click the button.
 It does not upload your document.
 
@@ -72,12 +72,16 @@ or `notice`. You can keep editing and add `--watch` to rebuild after each save.
 [Run the Python notebook](getting-started/notebook.md){ .md-button }
 [CSS support](css-coverage.md){ .md-button }
 
-The playground uses the released **Fullbleed 2.5.8** Rust engine, compiled to
+The playground uses the released **Fullbleed 2.5.11** Rust engine, compiled to
 WebAssembly. Page previews are rendered from the same PDF you download, including
 the report's gradient chart fills. It accepts static
 HTML/CSS, with Inter, DM Serif Display, and Bebas Neue embedded fonts. JavaScript
 inside your document is not executed, and remote assets are not loaded. Use inline SVG for artwork.
 
+Unembedded Helvetica, Times, and Courier variants also produce visible previews.
+The [font-preview guide](engine/assets.md#standard-14-native-previews) explains
+the bundled substitute fonts used for those faces.
+
 This demo handles up to **6 pages and 200 KB of HTML/CSS**, with a 30-second render
 limit. These are playground limits; the local
 Python and Rust packages support larger jobs. Sample organizations and data are
@@ -89,7 +93,7 @@ fictional.
 · [Project download checks](assets/playground/project-verification.json)
 · [Third-party licenses](assets/playground/LICENSES.txt)
 
-<script type="module" src="../assets/playground/app.js?v=engine-258"></script>
+<script type="module" src="../assets/playground/app.js?v=engine-2511"></script>
 
 Build this into your own web app: [download the browser SDK starter](guides/browser-pdf.md),
 with editable templates and local PDF downloads.

examples/rust/Cargo.toml

@@ -7,7 +7,7 @@ license = "MIT"
 publish = false
 
 [dependencies]
-fullbleed = "=2.5.8"
+fullbleed = "=2.5.11"
 
 [[bin]]
 name = "hello"

examples/rust/README.md

@@ -1,6 +1,6 @@
 # Fullbleed from Rust
 
-These examples use the published `fullbleed` 2.5.8 crate. They require Rust
+These examples use the published `fullbleed` 2.5.11 crate. They require Rust
 1.85 or newer and a working native Rust toolchain; they do not require Python.
 
 From the root of this documentation repository:

playground/README.md

@@ -1,6 +1,6 @@
 # Fullbleed browser playground
 
-An optional static website adapter for the unchanged published `fullbleed = 2.5.8`
+An optional static website adapter for the unchanged published `fullbleed = 2.5.11`
 Rust crate. It compiles to `wasm32-wasip1` and runs inside a Web Worker using
 `@bjorn3/browser_wasi_shim` 0.4.2. It adds no dependencies to the Python wheel or
 the core Rust crate. The engine produces the PDF, then renders PNG page previews
@@ -28,8 +28,9 @@ python tools/check_site.py site
 The build uses both lockfiles, publishes a toolchain/hash record, and retains
 the generated verification report next to the browser assets. The verification
 script compares native and WASI PDF and PNG bytes for the invoice, report, and
-notice, an edited invoice, and three gradient cases; checks expected gradient
-colors and that an edit changes the output; and exercises source/page limits and
+notice, an edited invoice, three gradient cases, and all 12 unembedded Latin
+standard font faces; checks expected gradient colors and visible text in every
+standard-font row; and exercises source/page limits and
 recovery. The browser UI is additionally reviewed with actual downloaded PDFs.
 These checks establish the recorded fixtures only, not universal platform parity
 or ISO conformance.
@@ -49,14 +50,16 @@ are checked against the existing attribution manifest before export. After
 building the playground, verify the complete handoff with:
 
 ```sh
-python -m pip install fullbleed==2.5.8
+python -m pip install fullbleed==2.5.11 pypdf==6.19.0
 node tools/verify_project_export.mjs
 python -I tools/verify_project_export.py
 ```
 
 The verifier checks ZIP integrity, exact source and font/license bytes, export
 replay, failure recovery, and Python/WASI PDF and PNG equality for the invoice,
-report, notice, an edited invoice, and three gradient cases. Extracted projects run from paths with
+report, notice, an edited invoice, three gradient cases, and the standard-font
+fixture. An independent PDF reader verifies that all 12 font faces remain
+unembedded and their text is intact. Extracted projects run from paths with
 spaces and a different current working directory. Results are retained in
 `playground/project-verification`.
 
@@ -68,4 +71,6 @@ recover; no server process is created.
 
 `docs/assets/playground/fonts` contains the licensed fonts used by the showcase.
 Their upstream attribution is retained in `LICENSES.txt` and `font-sources.json`.
+`LICENSES.txt` also includes the licenses for substitute fonts compiled into the
+engine's standard-font preview renderer.
 The demo's limits and embedded assets are not the full local engine feature set.

playground/engine/Cargo.toml

@@ -6,7 +6,7 @@ license = "MIT"
 publish = false
 
 [dependencies]
-fullbleed = "=2.5.8"
+fullbleed = "=2.5.11"
 
 [profile.release]
 lto = true

playground/engine/src/main.rs

@@ -36,7 +36,7 @@ fn render() -> Result<(), Box<dyn std::error::Error>> {
     std::fs::write(
         "result.json",
         format!(
-            "{{\"engine\":\"2.5.8\",\"pages\":{},\"missing_glyphs\":{}}}",
+            "{{\"engine\":\"2.5.11\",\"pages\":{},\"missing_glyphs\":{}}}",
             pages.len(),
             glyphs.missing().len()
         ),