chore(lint): collapse minimalDeprecated config into base

[ChumpChief-bot]

Summary

Merges the minimalDeprecated ESLint configuration into the base config, eliminating the minimalDeprecated layer from the config hierarchy. No consumers reference minimalDeprecated directly anymore (all were upgraded to recommended in #26772).

The config hierarchy is now: base → recommended → strict → strictBiome

Changes

• Merged all minimalDeprecated rules into base rules
• Removed minimalDeprecated config, export, and rules file
• Added new base export from eslint-config-fluid (baseConfig + sharedConfigs) as a safe replacement
• Updated server config to use base directly
• Updated build-tools to use base instead of minimalDeprecated (AB#58054 remains open for upgrading to recommended)
• Removed minimal.json printed config

Rule migration details

12 rules from minimalDeprecated were not explicitly added to the base rules file because they are already covered by other mechanisms:

• 8 deprecated formatting rules (array-bracket-spacing, arrow-spacing, block-spacing, dot-location, jsx-quotes, key-spacing, space-unary-ops, switch-colon-spacing): all set to "off" in minimalDeprecated, and eslint-config-prettier (included in base) also sets them to "off"
• no-multi-spaces: re-enabled in a separate config block after prettierConfig to preserve the override ordering
• 3 TypeScript rules (@typescript-eslint/prefer-includes, @typescript-eslint/prefer-nullish-coalescing, @typescript-eslint/prefer-optional-chain): already enabled at "error" by the typescript-eslint/stylistic-type-checked preset included in base

All printed configs are verified identical before and after the change (excluding the removed minimal.json).

Test plan

• Verify pnpm build passes in common/build/eslint-config-fluid
• Verify printed configs are unchanged
• Spot-check lint on downstream packages

🤖 Generated with Claude Code

[Copilot]

Pull request overview

This PR simplifies the ESLint flat-config hierarchy in @fluidframework/eslint-config-fluid by folding the former minimalDeprecated layer into the base configuration, removing the deprecated config export and its printed output, and updating remaining internal consumers accordingly.

Changes:

• Merged minimalDeprecated rules and composition into the base config (including depend plugin + post-prettier no-multi-spaces ordering).
• Removed the minimalDeprecated config export and the library/rules/minimal-deprecated.mts rules module.
• Updated downstream/internal usage: server config now composes baseConfig + sharedConfigs, build-tools now uses recommended, and the minimal printed config is removed.

Reviewed changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
common/build/eslint-config-fluid/server.mts	Switches server config from minimalDeprecated to composing baseConfig + sharedConfigs + server overrides.
common/build/eslint-config-fluid/scripts/print-configs.ts	Stops printing the removed minimal config.
common/build/eslint-config-fluid/printed-configs/minimal.json	Removes the tracked printed minimal config output.
common/build/eslint-config-fluid/library/rules/recommended.mts	Updates docstring to reflect extending base (not minimalDeprecated).
common/build/eslint-config-fluid/library/rules/minimal-deprecated.mts	Deletes the deprecated rule set module.
common/build/eslint-config-fluid/library/rules/base.mts	Incorporates former minimalDeprecated rules into base rules (imports, TS, jsdoc/tsdoc, unicorn, etc.).
common/build/eslint-config-fluid/library/configs/factory.mts	Removes minimalDeprecated config assembly; recommended now builds from base directly.
common/build/eslint-config-fluid/library/configs/base.mts	Adds depend config, TS overrides previously in minimalDeprecated, and re-enables no-multi-spaces after prettier.
common/build/eslint-config-fluid/flat.mts	Removes the minimalDeprecated export from the flat-config entrypoint.
build-tools/eslint.config.base.mts	Updates build-tools shared config to re-export/extend recommended rather than minimalDeprecated.

[ChumpChief]

/azp run Build - api-markdown-documenter, Build - benchmark-tool, Build - build-common, Build - build-tools, Build - client packages, Build - common-utils, Build - eslint-config-fluid

[ChumpChief]

/azp run Build - eslint-plugin-fluid, Build - protocol-definitions, Build - test-tools, repo-policy-check, server-gitrest, server-gitssh, server-historian, server-routerlicious

[azure-pipelines]

Azure Pipelines successfully started running 4 pipeline(s).

[azure-pipelines]

Azure Pipelines successfully started running 2 pipeline(s).

[ChumpChief]

/azp run Build - api-markdown-documenter, Build - benchmark-tool, Build - build-common, Build - build-tools, Build - client packages, Build - common-utils, Build - eslint-config-fluid

[ChumpChief]

/azp run Build - eslint-plugin-fluid, Build - protocol-definitions, Build - test-tools, repo-policy-check, server-gitrest, server-gitssh, server-historian, server-routerlicious

[azure-pipelines]

Azure Pipelines successfully started running 4 pipeline(s).

[azure-pipelines]

Azure Pipelines successfully started running 2 pipeline(s).

[ChumpChief]

/azp run Build - api-markdown-documenter, Build - benchmark-tool, Build - build-common, Build - build-tools, Build - client packages, Build - common-utils, Build - eslint-config-fluid

[ChumpChief]

/azp run Build - eslint-plugin-fluid, Build - protocol-definitions, Build - test-tools, repo-policy-check, server-gitrest, server-gitssh, server-historian, server-routerlicious

[azure-pipelines]

Azure Pipelines successfully started running 2 pipeline(s).

[azure-pipelines]

Azure Pipelines successfully started running 4 pipeline(s).