fix(claude-api): replace 7 dead URLs in live-sources.md and related skill files

[wallidsaydi-creator]

Summary

Replaces 7 dead URLs across 3 files in the claude-api and academy-guide skills. All 7 listed URLs hard-404 today (verified across multiple passes, redirects followed, both curl and browser UAs); every replacement is confirmed 200 and already present in platform.claude.com/llms.txt — the registry simply needs re-syncing with the docs index.

Full details, per-line reproduction commands, and per-URL status table: #1698.

Fixes

skills/claude-api/shared/live-sources.md (4 rows):

Topic	Dead	Replacement
Pricing (L21)	docs/en/pricing.md → 404	docs/en/about-claude/pricing.md
Computer Use (L59)	docs/en/agents-and-tools/tool-use/computer-use.md → 404	docs/en/agents-and-tools/tool-use/computer-use-tool.md
Skills (L65)	docs/en/agents-and-tools/skills.md → 404	docs/en/agents-and-tools/agent-skills/overview.md
Anthropic CLI (L113)	docs/en/api/sdks/cli.md → 308→404	docs/en/cli-sdks-libraries/cli/quickstart.md

skills/claude-api/shared/tool-use-concepts.md (L342): agents-and-tools/computer-use/overview → 404 → agents-and-tools/tool-use/computer-use-tool

skills/academy-guide/SKILL.md (L90, L115): academy.claude.com/resources → 404 → academy.claude.com/all — this one has extra bite: the reference is the skill's designated fallback for when a fetch already failed, so the fallback path failed too.

Verification

All 7 dead URLs re-checked 2026-08-31 (404 stable); all 5 replacements re-checked 200 the same day. Table row padding adjusted so 3 of 4 modified rows keep their original character width; no other lines touched (+7/−7 total).

Prior art

Supersedes #703 (@y-yagi, March 2026) — now conflicting and covering 2 of the 4 registry rows. Credit to y-yagi for the first two fixes, which this PR includes alongside the remaining rows and the two related files.

Fixes #1698

[Hahaknight]

Verified what's verifiable from my location — the academy half checks out, the platform.claude.com half I can't confirm either way (geo-blocked egress), plus two concrete nits:

Verified ✅ — academy-guide/SKILL.md:

• https://academy.claude.com/resources → 404 (dead as reported)
• https://academy.claude.com/all → 200 — correct replacement.

Cannot verify from this egress (transparency) ⚠️ — live-sources.md: every platform.claude.com/docs/... URL (old and new) 307-redirects from my network to anthropic.com/app-unavailable-in-region, so both the issue's "4 dead URLs" claim and this PR's replacements look identical from here (region-block page returns 200 after following redirects). Maintainers not geo-blocked should spot-check the four new paths before merging. One signal did get through the block: api/sdks/cli.md answers 308 → docs/en/cli-sdks-libraries/sdks/cli.md — i.e. the platform's own canonical successor for that URL is sdks/cli.md, while this PR substitutes cli-sdks-libraries/cli/quickstart.md. If the intent is "follow where the old URL now points", sdks/cli.md is the redirect target; if quickstart.md is deliberately chosen as a better page for the extraction prompt, that's fine but worth a note in the PR body.

Nits — the replacements corrupted the table cells:

• Row label Computer Use → ComputerUse (space lost); Anthropic CLI → AnthropicCLI.
• Extraction prompt lost all spaces: "ExtractCLIinstall,authentication,commandstructure,andthebeta:agents..." — these prompts are passed verbatim to WebFetch, so they should stay human-readable; the table alignment also broke.
• Pricing / Skills rows similarly lost their column padding.

Suggest re-running the edits without the aggressive whitespace collapse, and confirming the four platform URLs from a non-blocked region.