Boilerplate reduction

What's Changed

• Document attribute parsing helpers by @leynos in #67
• Handle unknown ortho_config keys gracefully by @leynos in #68
• Fix wrapper path detection by @leynos in #69
• Implement CSV env var support by @leynos in #70
• Implement configuration inheritance by @leynos in #72
• Refactor file error creation by @leynos in #81
• Document usage examples for configuration helpers by @leynos in #80
• Refine subcommand merging by @leynos in #78
• Refactor config file parsing by @leynos in #79
• Implement hidden clap parser for config derivation by @leynos in #85
• Refactor short flag resolution by @leynos in #86
• Consolidate Prefix::new documentation by @leynos in #87
• Refactor CsvEnv to use Env helper by @leynos in #89
• Refactor field attribute parsing by @leynos in #88
• Add usage example for normalize_prefix by @leynos in #90
• Use lint expectations for trait methods by @leynos in #92
• Prevent CLI None overriding defaults by @leynos in #91
• Remove unfulfilled lint expectation for prefix by @leynos in #93
• Document subcommand merge tests by @leynos in #94
• Aggregate configuration errors across sources by @leynos in #95
• Improve CLI and config merging with flatten support by @leynos in #97
• Restrict push_stem_candidates to crate by @leynos in #102
• Document config features and add tests by @leynos in #98
• Extract subcommand env provider helper by @leynos in #99
• Refactor extends processing into helpers by @leynos in #104
• Introduce generic config discovery helper by @leynos in #103
• Document error conversion helper by @leynos in #100
• Refactor XDG path search in collect_unix_paths by @leynos in #101
• Refine extends helpers and tests by @leynos in #105
• Box large error variants by @leynos in #117
• Guard environment mutations in path tests by @leynos in #116
• Update user guide for modern API by @leynos in #107
• Add crate metadata for publishing by @leynos in #124
• Remove legacy subcommand config helpers by @leynos in #125
• Document sanitisation helpers and refine error mapping by @leynos in #122
• Add SubcmdConfigMerge trait for subcommand configs by @leynos in #121
• Add version sync script by @leynos in #126
• Expose SubcmdConfigMerge and fix example serialization by @leynos in #129
• Re-export config dependencies by @leynos in #134
• Extract path canonicalisation helper by @leynos in #130
• Document config_path flag usage in guide by @leynos in #135
• Refactor CLI long flag validation and add tests by @leynos in #132
• Document candidate path search order by @leynos in #131
• Clarify CLI flag naming and preallocate long flag set by @leynos in #143
• Bump tokio from 1.47.0 to 1.47.1 by @dependabot[bot] in #138
• Bump serde_json from 1.0.140 to 1.0.143 by @dependabot[bot] in #139
• Bump tempfile from 3.20.0 to 3.21.0 by @dependabot[bot] in #137
• Bump thiserror from 1.0.69 to 2.0.12 by @dependabot[bot] in #140
• Bump actions/checkout from 4 to 5 by @dependabot[bot] in #141
• Bump syn from 2.0.102 to 2.0.106 by @dependabot[bot] in #142
• Use tomlkit for version bumps by @leynos in #133
• Bump clap from 4.5.40 to 4.5.46 by @dependabot[bot] in #144
• Bump thiserror from 2.0.12 to 2.0.16 by @dependabot[bot] in #145
• Bump proc-macro2 from 1.0.95 to 1.0.101 by @dependabot[bot] in #146
• Bump trybuild from 1.0.105 to 1.0.110 by @dependabot[bot] in #147
• Clarify flag derivation in users guide by @leynos in #149
• Remove srgn documentation reference by @leynos in #154
• Adopt Arc-backed errors and OrthoResult by @leynos in #156
• Normalise roadmap checkboxes by @leynos in #155
• Bump toml from 0.8.23 to 0.9.5 by @dependabot[bot] in #148
• Bump rstest from 0.25.0 to 0.26.1 by @dependabot[bot] in #150
• Bump clap from 4.5.46 to 4.5.47 by @dependabot[bot] in #151
• Bump leynos/shared-actions from ebbaaa0d7a776ec3187f3940667e5c7c9379cdf5 to 988ff278fcab48e8a932e2af88ce1aaaa78386a0 by @dependabot[bot] in #152
• Bump tempfile from 3.21.0 to 3.22.0 by @dependabot[bot] in #153
• Add fallible error aggregation and iteration support by @leynos in #160
• Add subcommand precedence tests by @leynos in #161
• Bump serde from 1.0.219 to 1.0.224 by @dependabot[bot] in #167
• Bump trybuild from 1.0.110 to 1.0.111 by @dependabot[bot] in #164
• Bump serde_json from 1.0.143 to 1.0.145 by @dependabot[bot] in #163
• Preserve trailing newline in version bump script by @leynos in #168
• Bump toml from 0.9.5 to 0.9.6 by @dependabot[bot] in #166
• Add hello world example outline by @leynos in #169
• Add hello world example crate by @leynos in #171
• Fix hello world CLI layering by @leynos in #176
• Add hello world rstest and cucumber coverage by @leynos in #178
• Add hello world sample configuration demos by @leynos in #179
• Add reusable config discovery helper by @leynos in #183
• Expose configurable discovery in docs and hello world by @leynos in #187
• Normalise ortho_config prefix underscore handling by @leynos in #190
• Clarify declarative merge roadmap checklist by @leynos in #189

New Contributors

• @dependabot[bot] made their first contribution in #138

Full Changelog: v0.4.0...v0.5.0