fix(docs): resolve relative links in index-vol4 and README package license links

Author: profvjreddi

.pre-commit-config.yaml

@@ -173,7 +173,7 @@ repos:
             _book/|
             node_modules/|
             (packages/)?mlsysim/docs/api/|              # auto-generated quartodoc API stubs
-            slides/tinyml/README-edx-original\.md$|  # legacy edX export, archive
+            (materials/)?slides/tinyml/README-edx-original\.md$|  # legacy edX export, archive
             (packages/)?tinytorch/tests/.*README\.md$|  # GitHub line-range anchors (#L74-L99)
             labs/index\.qmd$|               # Volume-N lab dirs are forward-looking
             labs/PROTOCOL\.md$|             # Internal authoring doc, links into ../.claude/

README.md

@@ -577,12 +577,12 @@ This is a multi-component repository, and **each component is released under its
 | Component | License | What it means |
 |---|---|---|
 | Textbook (`book/`), Labs (`labs/`), Kits (`kits/`), Slides (`slides/`), Instructors (`instructors/`) | [CC-BY-NC-SA 4.0](LICENSE.md) | Share and adapt for **non-commercial** use, with attribution and same-license sharing. |
-| [TinyTorch](tinytorch/LICENSE) | MIT | Permissive — use, modify, redistribute, including commercially. |
-| [MLSys·im](mlsysim/LICENSE.md) | Apache 2.0 | Permissive with explicit patent grant. |
+| [TinyTorch](packages/tinytorch/LICENSE) | MIT | Permissive — use, modify, redistribute, including commercially. |
+| [MLSys·im](packages/mlsysim/LICENSE.md) | Apache 2.0 | Permissive with explicit patent grant. |
 | [StaffML](interviews/staffml/LICENSE) | AGPL v3 | Strong copyleft — modifications to deployed services must be published. Commercial licensing available; contact the authors. |
 | [StaffML question corpus](interviews/vault/questions/LICENSE) | CC BY-NC 4.0 | Research and educational use; commercial use requires permission. |
-| [TinyDigits dataset](tinytorch/datasets/tinydigits/LICENSE) | BSD 3-Clause | Permissive (matches sklearn ancestry). |
-| [TinyTalks dataset](tinytorch/datasets/tinytalks/LICENSE) | CC BY 4.0 | Permissive with attribution; commercial use allowed. |
+| [TinyDigits dataset](packages/tinytorch/LICENSE) | BSD 3-Clause | Permissive (matches sklearn ancestry). |
+| [TinyTalks dataset](packages/tinytorch/LICENSE) | CC BY 4.0 | Permissive with attribution; commercial use allowed. |
 
 A user-facing summary lives at [mlsysbook.ai/about/license](https://mlsysbook.ai/about/license.html).
 

publishing/quarto/index-vol4.qmd

@@ -7,15 +7,15 @@
 ::: {.callout-objective title="Start Reading" icon=false}
 Begin with the machine itself, and the line inside it where computation stops being advice and starts being force.
 
-[Chapter 1: From Machine Learning Systems to Physical AI](chapters/01-boundary/01-boundary.qmd){.btn .btn-primary .btn-sm role="button"}
+[Chapter 1: From Machine Learning Systems to Physical AI](contents/vol4/chapters/01-boundary/01-boundary.qmd){.btn .btn-primary .btn-sm role="button"}
 :::
 :::
 
 ::: {.g-col-12 .g-col-md-6}
 ::: {.callout-teaching title="Reader Guide and Prerequisites" icon=false}
 What this book assumes you already know, what it builds from first principles, and what it deliberately leaves to other books.
 
-[Reader Guide and Prerequisites](front-matter/prerequisites.qmd){.btn .btn-outline-primary .btn-sm role="button"}
+[Reader Guide and Prerequisites](contents/vol4/front-matter/prerequisites.qmd){.btn .btn-outline-primary .btn-sm role="button"}
 :::
 :::