PCSM-231 Product renaming

[nastena1606]

Kept previous releases with old product name

[Copilot]

Pull request overview

This PR renames the product from "Percona Link for MongoDB" (PLM) to "Percona ClusterSync for MongoDB" (PCSM) throughout the documentation. The renaming preserves the old product name in historical release notes (versions 0.5.0 and 0.6.0) while updating all current documentation and references to use the new branding.

Key changes:

• Updated product naming variables and references from PLM to PCSM across all documentation
• Replaced snippet files to use new product name
• Renamed service-related files and commands (plm → pcsm)
• Updated repository references and URLs
• Preserved old product name in historical release notes (0.5.0 and 0.6.0)

Reviewed changes

Copilot reviewed 37 out of 37 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
variables.yml	Updated product name variables from plm to pcsm
snippets/plm-description.md	Removed old product description snippet
snippets/pcsm-description.md	Added new product description snippet with updated name
mkdocs-base.yml	Updated site name, repository references, and navigation items
docs/troubleshooting.md	Replaced all PLM references with PCSM throughout troubleshooting guide
docs/system-requirements.md	Updated product name references in system requirements
docs/release-notes/0.6.0.md	Preserved old product name for historical 0.6.0 release
docs/release-notes/0.5.0.md	Preserved old product name for historical 0.5.0 release
docs/release-notes.md	Updated heading while preserving old name in release links
docs/reference/glossary.md	Updated product references in glossary definitions
docs/reference/contributing.md	Deleted old contributing guidelines file
docs/pmm-setup.md	Updated all PLM references to PCSM in monitoring setup guide
docs/pcsm-commands.md	Updated command documentation with new product name
docs/oplog-sizing.md	Updated product references in oplog sizing guide
docs/logging.md	Updated product references in logging documentation
docs/limitations.md	Updated product name in limitations documentation
docs/intro.md	Updated product references throughout introduction
docs/installation.md	Updated product name in quickstart guide
docs/install/usage.md	Updated all product references in usage documentation
docs/install/start-plm.md	Removed old PLM startup guide
docs/install/start-pcsm.md	Added new PCSM startup guide
docs/install/source.md	Updated build instructions with new repository and product name
docs/install/repos.md	Updated repository installation guide with new product name
docs/install/parameters.md	Updated parameter documentation and environment variable names
docs/install/authentication.md	Updated authentication guide with new product name
docs/index.md	Updated main documentation page with new product name
docs/get-help.md	Updated product reference in help page
docs/faq.md	Updated all product references in FAQ
docs/deployment.md	Expanded deployment documentation with sharding support and restructured content
docs/copyright.md	Updated product name in copyright notice
docs/compare.md	Updated product name in comparison documentation
docs/api.md	Updated product name in API documentation
docs/about-docs.md	Updated product references and Jira project link
_resource/overrides/partials/banner.html	Updated help link URL
_resource/overrides/main.html	Updated product name, URLs, and forum link
README.MD	Updated product name and repository references
CONTRIBUTING.md	Updated product name and simplified build instructions

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[Copilot]

The link references sharding.md but this file is not included in the PR changes. Either the file needs to be added or the link should be removed/updated to point to an existing resource.

Suggested change

	* **Sharded cluster to Sharded cluster**: The source and target sharded clusters can have different numbers of shards. This functionality is in tech preview stage. See [Sharding support in {{pcsm.full_name}}](sharding.md) for details.
	* **Sharded cluster to Sharded cluster**: The source and target sharded clusters can have different numbers of shards. This functionality is in tech preview stage. See the sharding support documentation for {{pcsm.full_name}} for details.

[Copilot]

The navigation includes sharding.md but this file is not present in the PR changes. This will result in a broken navigation link unless the file exists elsewhere or is added.

Suggested change

- sharding.md

[radoslawszulgo]

Suggested change

	<p> The version 0.6.0 of Percona ClusterSync for MongoDB is the technical preview. We encourage you to test Percona ClusterSync for MongoDB and <a href= "https://forums.percona.com/c/mongodb/24">give your feedback</a>.
	<p> The version 0.6.0 of Percona ClusterSync for MongoDB is the technical preview. We encourage you to test Percona ClusterSync for MongoDB and <a href= "https://forums.percona.com/c/mongodb/percona-link-for-mongodb-plm/87">give your feedback</a>.

[radoslawszulgo]

that doesn't exist.. is that needed?

[nastena1606]

It's not visible in the docs so let's keep it in case we decide we need PDFs.

[radoslawszulgo]

it'be best to have this variable name independent from the actual name like "product:"

otherwise this doesn't help when you need to change it everywhere :)

[nastena1606]

True. Hopefully this is the last renaming:)

[radoslawszulgo]

We need to be consistent with naming here. I'd suggest to leave PLM here as well.

[radoslawszulgo]

Let's add somewhere at this page something like:

Note: As of Version 0.7.0, Percona Link for MongoDB has been rebranded to Percona ClusterSync. All references to Percona Link for MongoDB in previous release notes refer to this product.