Using goada-wasm if CGO_ENABLE=0

[yzqzss]

No description provided.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 56.62%. Comparing base (33782fc) to head (abadfe8).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #511      +/-   ##
==========================================
+ Coverage   56.36%   56.62%   +0.26%     
==========================================
  Files         130      130              
  Lines        8131     6479    -1652     
==========================================
- Hits         4583     3669     -914     
+ Misses       3184     2446     -738     
  Partials      364      364              

Flag	Coverage Δ
e2etests	41.28% <100.00%> (+0.59%)	⬆️
unittests	29.18% <100.00%> (-0.06%)	⬇️

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[yzqzss]

golang/go#44695 (comment)

CI fails because CGO_ENABLE="1" but we no longer use cgo.

Update: Hmm, completely removing the cgo goada wasn't a good idea, since wasm has a much greater performance penalty than cgo.
So I changed this PR so that when CGO_ENABLE=1 the build uses goada, and when CGO_ENABLE=0 the build uses my goada-wasm :) .

[Copilot]

Pull Request Overview

This PR enables Zeno to build and run without CGO by introducing a WebAssembly-based URL parser (goada-wasm) as an alternative to the CGO-dependent goada library. The change makes CGO optional rather than required, allowing the project to compile on systems without C++ compiler toolchains at the cost of reduced performance on non-amd64/arm64 architectures.

Key Changes:

• Added CGO-free URL parsing implementation using goada-wasm package
• Updated build process to test both CGO-enabled and CGO-disabled configurations
• Revised documentation to reflect that CGO is now optional

Reviewed Changes

Copilot reviewed 7 out of 8 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
internal/pkg/preprocessor/url_cgofree.go	New CGO-free implementation of URL normalization using goada-wasm
internal/pkg/preprocessor/url_cgo.go	Added build tag and Backend() function to existing CGO implementation
go.mod	Added goada-wasm v1.0.1 dependency
cmd/cmd.go	Added URL parser backend information to CLI help output
README.md	Updated requirements section to document CGO as optional with performance tradeoffs
.github/workflows/go.yml	Enhanced CI to test both CGO-enabled and CGO-disabled builds
.github/copilot-instructions.md	Updated internal documentation to reflect optional CGO dependency