feat(google-scholar): add cite and profile commands, fix search dedup

[Benjamin-eecs]

Description

Three changes to the google-scholar adapter:

1. Fix search duplicate results ([Bug]: google-scholar search returns duplicate results #1174). The CSS selector .gs_r.gs_or.gs_scl, .gs_ri matched both the outer container and its inner .gs_ri child, producing every paper twice. Changed to .gs_r.gs_or.gs_scl only.

2. Add cite command ([Feature]: add cite and profile commands to google-scholar adapter #1175). Get BibTeX/EndNote/RefMan/RefWorks citation for a paper. Searches for the paper, clicks the cite button in search results, and navigates to Google's citation endpoint to fetch the formatted content. Supports --style to choose format and --index to pick which result to cite.

3. Add profile command ([Feature]: add cite and profile commands to google-scholar adapter #1175). View an author's Google Scholar profile: name, affiliation, h-index, i10-index, total citations, and top papers. Accepts either an author name (searches for the profile) or a 12-char Scholar user ID (navigates directly).

Fixes #1174, closes #1175

Type of Change

• 🐛 Bug fix
• ✨ New feature
• 🌐 New site adapter
• 📝 Documentation
• ♻️ Refactor
• 🔧 CI / build / tooling

Checklist

• I ran the checks relevant to this PR
• I updated tests or docs if needed
• I included output or screenshots when useful

Documentation (if adding/modifying an adapter)

• Added doc page under docs/adapters/ (if new adapter)
• Updated docs/adapters/index.md table (if new adapter)
• Updated sidebar in docs/.vitepress/config.mts (if new adapter)
• Updated README.md / README.zh-CN.md when command discoverability changed
• Used positional args for the command's primary subject unless a named flag is clearly better
• Normalized expected adapter failures to CliError subclasses instead of raw Error

Screenshots / Output

search (dedup fix):

$ opencli google-scholar search "deep learning" --limit 3
- rank: 1
  title: Deep learning
  authors: Y LeCun, Y Bengio, G Hinton
  cited: '111283'
  year: '2015'
- rank: 2
  title: Deep learning
  authors: I Goodfellow, Y Bengio, A Courville, Y Bengio
  cited: '93860'
  year: '2016'
- rank: 3
  title: Deep learning
  authors: Y Bengio, I Goodfellow, A Courville
  cited: '2873'
  year: '2017'

cite:

$ opencli google-scholar cite "attention is all you need"
- title: Attention is all you need
  format: bibtex
  citation: |-
    @article{vaswani2017attention,
      title={Attention is all you need},
      author={Vaswani, Ashish and Shazeer, Noam and ...},
      journal={Advances in neural information processing systems},
      volume={30},
      year={2017}
    }

profile:

$ opencli google-scholar profile "Geoffrey Hinton" --limit 5
- rank: 0
  title: Geoffrey Hinton (Emeritus Prof. Computer Science, University of Toronto)
  cited: h=190 i10=527 total=1031832
- rank: 1
  title: Imagenet classification with deep convolutional neural networks
  cited: '193904'
  year: '2012'
- rank: 2
  title: Deep learning
  cited: '111283'
  year: '2015'
...

[Copilot]

Pull request overview

Adds new cite and profile commands to the google-scholar adapter and fixes duplicate search results caused by an overly-broad CSS selector.

Changes:

• Fix search result deduplication by narrowing the result container selector.
• Add google-scholar cite to fetch formatted citations (BibTeX/EndNote/RefMan/RefWorks) from Scholar.
• Add google-scholar profile to fetch author profile metrics and top papers (by name lookup or direct user ID).

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 3 comments.

File	Description
clis/google-scholar/search.js	Narrows the DOM selector to avoid double-counting results.
clis/google-scholar/cite.js	Introduces a new command to open the cite dialog and fetch formatted citation content.
clis/google-scholar/profile.js	Introduces a new command to navigate to an author profile and extract stats + papers.

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[Copilot]

Missing tests for the new google-scholar/profile command. Since this adapter already has vitest coverage for command registration and pre-navigation argument validation (clis/google-scholar/search.test.js), add a profile.test.js to verify the command is registered correctly and that empty/whitespace author input is rejected before calling page.goto.

[Copilot]

The command description says it gets citation “(BibTeX)”, but the command supports multiple formats via --style (endnote/refman/refworks). Update the description to reflect all supported formats so opencli ... --help is accurate.

Suggested change

	description: 'Get citation (BibTeX) for a Google Scholar paper',
	description: 'Get citation for a Google Scholar paper',

[Copilot]

Missing tests for the new google-scholar/cite command. This repo already uses vitest for CLI command registration/argument validation (e.g., clis/google-scholar/search.test.js); please add a similar test file to cover command registration and that empty/whitespace queries are rejected before any browser navigation.