Ignore CSS pseudo-selector :: patterns in dependency extraction used by att_amend_desc

[Copilot]

att_amend_desc() was producing false dependency positives when scanning code that contains CSS selectors like label::after. The parser treated :: inside string literals as namespace calls and extracted bogus package names.

• Scope

  • Updated dependency extraction in att_from_rscript() to ignore pkg:: detection inside quoted string literals.
  • Kept existing detection for real namespace calls and library()/require()/requireNamespace() usage unchanged.

• Behavioral change

  • CSS/content strings are no longer interpreted as package dependencies.
  • Legitimate calls such as glue::glue() remain detected.

• Coverage added

  • Added a focused unit test in tests/testthat/test-rscript.R to assert:
    • glue::glue() is detected.
    • label::after inside a CSS string is not detected.

x <- ".pretty .state label::after { color: red; }"
glue::glue("ok")
# detected deps => "glue" (not "label")

[VincentGuyader]

@copilot fix this

[Copilot]

@copilot fix this

Done in 24d501f: I added a follow-up fix so att_from_rscripts() now only parses .R/.r files, which prevents CSS files like global.css (label::after) from being treated as dependencies. I also added a unit test covering this CSS-file case.