[docs] Document new project sql, project upgrade commands and update notifications

[shopware-docs-updater]

Related to shopware/shopware-cli#1391 (by @shyim).

That PR merges back several user-facing CLI features that were previously undocumented:

• A new shopware-cli project sql command: opens an interactive SQL shell, runs a single query passed as an argument, or executes a script piped via stdin, against the current environment's database connection. Supports --format table|tsv|json.
• A new shopware-cli project upgrade command: an interactive wizard that guides users through readiness checks, version selection, extension compatibility, and execution of a Shopware upgrade. Supports headless/CI usage via --no-interaction with --target (accepting a version, recommended, or latest-patch), plus --dry-run and --no-audit flags.
• A new global --no-update-hint flag and SHOPWARE_CLI_NO_UPDATE_NOTIFICATION environment variable to silence the CLI's new background update-check notification.

None of these were previously documented, so this PR adds:

• products/tools/cli/project-commands/sql.md — new page documenting project sql
• products/tools/cli/project-commands/upgrade.md — new page documenting project upgrade
• products/tools/cli/installation.md — new "Update notifications" section documenting --no-update-hint and SHOPWARE_CLI_NO_UPDATE_NOTIFICATION

Command names, flags, and defaults were taken directly from the source PR's diff (cmd/project/project_sql.go, cmd/project/project_upgrade.go, cmd/root.go) to avoid inventing behavior.

cc @shyim

Generated by 📝 PR documentation check for #1391 · auto · 47.9 AIC · ⌖ 6.02 AIC · ⊞ 7.6K · ◷

[shopware-dev-docs-connector]

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Commit: 2e981cc
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[Copilot]

Pull request overview

This PR updates the Shopware CLI documentation to cover newly introduced user-facing behavior, specifically adding reference documentation for shopware-cli project sql and documenting the new background update notification opt-out.

Changes:

• Adds a new project sql documentation page, including interactive usage, one-shot queries, and output formats.
• Adds an “Update notifications” section to the CLI installation docs to document --no-update-hint and SHOPWARE_CLI_NO_UPDATE_NOTIFICATION.

Reviewed changes

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

File	Description
products/tools/cli/project-commands/sql.md	New documentation page for shopware-cli project sql usage and output formats.
products/tools/cli/installation.md	Documents how to silence the CLI’s update notification via flag and env var.

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[Micha Hobert (Isengo1989)]

LGTM 👍