docs(core): include deep-recon in core skill count references

[santhiprakash]

What

Sync the English core-tools and commands reference pages with the shipped core skill set so bmad-deep-recon is counted and listed.

Why

src/core-skills/bmad-deep-recon exists, but docs/reference/core-tools.md says the module has "seven core skills" with three thinking skills, and docs/reference/commands.md says "8 built-in tools" while only naming seven. Both summaries omit deep-recon.

How

• core-tools.md: update the intro to "eight core skills" / "four thinking skills" and add deep-recon to the thinking-skills list.
• commands.md: add deep-recon to the parenthetical list of thinking skills.

Testing

• git show upstream/main:<file> confirmed the bug marker is still present.
• python3 ../scripts/preflight_ship.py passed (no open duplicates, fix marker absent).
• node tools/validate-file-refs.js --strict → 0 broken refs.
• node tools/validate-doc-links.js, node tools/validate-sidebar-order.js, node tools/build-docs.mjs, and node tools/validate-skills.js --strict all passed.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

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Review profile: CHILL

Plan: Pro Plus

Run ID: 76e8f358-16c1-484e-8538-6d0fb9286beb

📥 Commits

Reviewing files that changed from the base of the PR and between bb45db4 and 215c1c7.

📒 Files selected for processing (2)

• docs/reference/commands.md
• docs/reference/core-tools.md

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📝 Walkthrough

Walkthrough

The documentation now describes the core module as providing eight skills, including deep-recon, and updates the related built-in tools reference.

Changes

Core skills documentation

Layer / File(s)	Summary
Core skills reference alignment docs/reference/core-tools.md, docs/reference/commands.md	Updates the core skill count from seven to eight, adds deep-recon to the listed thinking skills, and aligns the built-in tools description with the Core Tools reference.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Possibly related PRs

• bmad-code-org/BMAD-METHOD#2439: Updates overlapping core-tools and skills documentation.
• bmad-code-org/BMAD-METHOD#2599: Revises descriptions of the core tools and skills.
• bmad-code-org/BMAD-METHOD#2603: Documents the streamlined eight-skill core set.

Suggested reviewers: bmadcode

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly matches the doc update about adding deep-recon to core skill references.
Description check	✅ Passed	The description directly explains the documentation changes and why they were needed.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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