refactor: forge -> backend

[jdx]

No description provided.

[github-actions]

Package	Line Rate	Complexity	Health
src.backend	78%	0	✔
src	87%	0	✔
src.cli	83%	0	✔
src.cli.alias	89%	0	✔
src.cli.args	97%	0	✔
src.cli.backends	95%	0	✔
src.cli.cache	95%	0	✔
src.cli.config	92%	0	✔
src.cli.direnv	80%	0	✔
src.cli.generate	87%	0	✔
src.cli.plugins	86%	0	✔
src.cli.settings	93%	0	✔
src.cli.sync	29%	0	❌
src.cli.tasks	71%	0	➖
src.config.config_file	89%	0	✔
src.config	87%	0	✔
src.plugins	90%	0	✔
src.plugins.core	56%	0	➖
src.shell	98%	0	✔
src.toolset	86%	0	✔
src.ui	64%	0	➖
Summary	81% (13648 / 16754)	0	✔

[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
✅ +0.00%	✅ 89.20%

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (0e0db86)	16732	13630	81.46%
Head commit (8f876cc)	16754 (+22)	13648 (+18)	81.46% (+0.00%)

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#2227)	398	355	89.20%

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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