refactor(skills): inline cross-links, drop Related sections, fix conventions

- all nine files: trailing "Related" sections removed, their unique links
  inlined where the topic actually arises (FFI boundary -> c-cpp, embedded
  frontend -> js-typescript, build scripts -> bash, etc.)
- README conventions: rule 2 mandated a Related Skills section, which now
  contradicts practice — replaced with inline-linking and one-home-per-fact
  rules. The <repo>/<rel path> rule was appended after the wrong section
  last commit; moved into the list where it belongs.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

code-languages/bash.md

@@ -11,8 +11,8 @@ description: >-
 Extends [`coding-dev.md`](skills-public/coding-dev.md). Everything there applies; this adds shell specifics.
 
 Bash is for **orchestration** — sequencing tools, wiring a build pipeline, gluing CLIs.
-Once a script grows real data structures, arithmetic, or parsing, it wants to be Python or
-a compiled tool instead.
+Once a script grows real data structures, arithmetic, or parsing, it wants to be
+[Python](skills-public/code-languages/python.md) or a compiled tool instead.
 
 ---
 
@@ -165,11 +165,3 @@ Standalone utility scripts belong in a **dedicated, version-controlled scripts d
 symlinked into `PATH` rather than copied there. Never write a loose script directly into
 `~/.local/bin` or another `PATH` directory — the source of truth should be one versioned
 location. See [`cli-tooling.md` §5](skills-public/cli-tooling.md) for the reasoning and the pattern.
-
----
-
-## 10. Related
-- [`coding-dev.md`](skills-public/coding-dev.md) — the general rules this extends.
-- [`cli-tooling.md`](skills-public/cli-tooling.md) — invoking other tools *from* these scripts:
-  discovery, non-interactive flags, structured output.
-- [`python.md`](skills-public/code-languages/python.md) — where a shell script should have become a Python script.

code-languages/c-cpp.md

@@ -11,8 +11,8 @@ description: >-
 Extends [`coding-dev.md`](skills-public/coding-dev.md). Everything there applies; this adds C/C++ specifics.
 
 C and C++ are for the cases with no better option: existing codebases, hard real-time paths,
-and FFI boundaries. **For new standalone work, prefer Rust** — the memory-safety guarantees
-are worth more than the familiarity.
+and FFI boundaries. **For new standalone work, prefer [Rust](skills-public/code-languages/rust.md)** — the memory-safety
+guarantees are worth more than the familiarity.
 
 ---
 
@@ -144,10 +144,3 @@ When exposing C/C++ to another language:
 - When a binary search through a packed/embedded blob finds nothing, that is not evidence the
   content is absent — packed asset formats defeat naive string searches. Re-check without
   anchoring before concluding.
-
----
-
-## 9. Related
-- [`coding-dev.md`](skills-public/coding-dev.md) — the general rules this extends.
-- [`rust.md`](skills-public/code-languages/rust.md) — the preferred language for new native work, and the usual consumer
-  of these FFI boundaries.

code-languages/csharp-dotnet.md

@@ -143,12 +143,7 @@ interface, a type being renamed):
   project's designated container. Entering one resets the working directory — chain `cd` in the
   same command string.
 - Prefer the project's build script over hand-typed `dotnet` calls; it carries `-warnaserror`,
-  the correct action ordering, and the asset completeness checks.
+  the correct action ordering, and the asset completeness checks — see
+  [`bash.md`](skills-public/code-languages/bash.md) for how that script should be structured.
 - **Never stop, deploy to, or restart an application while the user has it running**, unless
   they have said to.
-
----
-
-## 9. Related
-- [`coding-dev.md`](skills-public/coding-dev.md) — the general rules this extends.
-- [`bash.md`](skills-public/code-languages/bash.md) — for the release pipeline scripts around a .NET build.

code-languages/go.md

@@ -135,7 +135,8 @@ CGO_ENABLED=0 go build -trimpath -ldflags="-s -w" -o bin/app ./cmd/app
 - One package per concern; **package names are lowercase, single-word, no underscores**, and
   never `util` or `common`.
 - Keep the exported surface small. Unexported by default.
-- Embed frontend/static assets with `//go:embed` for single-binary distribution.
+- Embed frontend/static assets with `//go:embed` for single-binary distribution — the frontend
+  itself follows [`js-typescript.md`](skills-public/code-languages/js-typescript.md).
 - File and function size limits from the general rules apply.
 
 ---
@@ -149,9 +150,3 @@ CGO_ENABLED=0 go build -trimpath -ldflags="-s -w" -o bin/app ./cmd/app
 - **Regression test every fixed bug.**
 - **Never run destructive operations against real accounts or user data during validation** —
   temporary fixtures only.
-
----
-
-## 10. Related
-- [`coding-dev.md`](skills-public/coding-dev.md) — the general rules this extends.
-- [`js-typescript.md`](skills-public/code-languages/js-typescript.md) — for the embedded frontend in a Go service.

code-languages/js-typescript.md

@@ -175,7 +175,8 @@ Attach an `AbortController` to every long-lived `fetch` and abort it in cleanup.
 ## 10. Tooling & Tests
 
 - Respect the project's runtime and package manager (`npm` / `pnpm` / `yarn` / `bun`) and its
-  lockfile. Do not switch package managers or add a second lockfile.
+  lockfile. Do not switch package managers or add a second lockfile. Build and release scripts
+  around it follow [`bash.md`](skills-public/code-languages/bash.md).
 - Test runner: whatever the project uses (`vitest`, `bun test`, `jest`). Tests live beside the
   code as `*.test.ts(x)` unless the project says otherwise.
 - **Add unit tests for new logic and route tests for new handlers.** Prioritize coverage on
@@ -195,9 +196,3 @@ Attach an `AbortController` to every long-lived `fetch` and abort it in cleanup.
 > current APIs frequently differ from what is in a model's training data. **Read the version's
 > own docs in `node_modules/<pkg>/dist/docs/` or the project's pinned documentation before
 > writing code against them.** Heed deprecation notices rather than pattern-matching from memory.
-
----
-
-## 12. Related
-- [`coding-dev.md`](skills-public/coding-dev.md) — the general rules this extends.
-- [`bash.md`](skills-public/code-languages/bash.md) — for the build/release scripts around these projects.

code-languages/python.md

@@ -9,6 +9,7 @@ description: >-
 # Python — Rules & Preferences
 
 Extends [`coding-dev.md`](skills-public/coding-dev.md). Everything there applies; this adds Python specifics.
+For the surrounding build and deploy scripts, see [`bash.md`](skills-public/code-languages/bash.md).
 
 ---
 
@@ -145,9 +146,3 @@ When talking to a rate-limited API (a chat platform, a store, a tracker):
 - **Never exercise destructive operations against real accounts or real data.** Temporary
   fixtures only.
 - `pytest -p no:randomly` only when order genuinely matters, and note why.
-
----
-
-## 10. Related
-- [`coding-dev.md`](skills-public/coding-dev.md) — the general rules this extends.
-- [`bash.md`](skills-public/code-languages/bash.md) — for the surrounding build and deploy scripts.

code-languages/rust.md

@@ -96,7 +96,7 @@ workspace = true
 **Forbidden by default**, enforced in `Cargo.toml` with `unsafe_code = "forbid"`.
 
 If an FFI binding genuinely requires it, it goes behind a **safe wrapper in exactly one
-module**, with a `// SAFETY:` comment on every block stating the invariant being upheld.
+module** (see [`c-cpp.md`](skills-public/code-languages/c-cpp.md) for the other side of that boundary), with a `// SAFETY:` comment on every block stating the invariant being upheld.
 `unsafe` scattered through call sites is not acceptable.
 
 ---
@@ -189,9 +189,3 @@ throttling so a release build does not saturate the machine.
 
 **Split so that as little as possible needs the container**: a `-core` crate with no GUI
 dependencies builds and tests directly on the host, which is seconds instead of minutes.
-
----
-
-## 11. Related
-- [`coding-dev.md`](skills-public/coding-dev.md) — the general rules this extends.
-- [`c-cpp.md`](skills-public/code-languages/c-cpp.md) — when bindgen/FFI crosses into a C library.