feat(packages): extract torrust-clock to standalone repository

[josecelano]

Summary

Closes #1879

Extracts the torrust-clock crate from the tracker workspace into its own standalone repository at https://github.com/torrust/torrust-clock.

Changes

• Publish torrust-clock v3.0.0 on crates.io (standalone Cargo.toml with no workspace path deps)
• Remove packages/clock/ from the tracker workspace (git rm -r)
• Remove packages/clock from workspace members in root Cargo.toml
• Migrate 13 workspace consumers from path dep to crates.io version dep (torrust-clock = "3.0.0"):
  • Cargo.toml (root)
  • packages/axum-health-check-api-server
  • packages/axum-http-server
  • packages/axum-rest-api-server
  • packages/http-protocol
  • packages/http-tracker-core
  • packages/metrics
  • packages/primitives
  • packages/swarm-coordination-registry
  • packages/tracker-core
  • packages/torrent-repository-benchmarking
  • packages/udp-server
  • packages/udp-tracker-core
• Update docs: AGENTS.md, packages/AGENTS.md, docs/packages.md — remove clock from workspace package catalog and architecture diagram
• Update EPIC Overhaul: packages #1669 tables: clock extraction row set to DONE

Notes

• torrust-clock was previously published as torrust-tracker-clock. Both READMEs include a rename/deprecation notice.
• CI setup, AI agent configuration, and release process for the standalone repo are deferred to a future issue against torrust/torrust-clock (the crate is mature and has not changed recently).
• cargo build --workspace passed locally before commit (7m build after dep migration).

Related to #1669

[Copilot]

Pull request overview

This PR extracts the torrust-clock crate from the torrust-tracker Cargo workspace into a standalone crates.io dependency (torrust-clock = "3.0.0"), removes the in-repo packages/clock/ crate, and updates workspace documentation and issue tracking docs to reflect the change.

Changes:

• Migrates all in-workspace consumers from a path dependency (../clock) to the published crate (torrust-clock = "3.0.0") and updates Cargo.lock accordingly.
• Removes the packages/clock/ crate sources/tests/manifest from this repository.
• Updates package/architecture docs and EPIC/issue specs to reflect the extraction (with some spec status consistency issues noted in review comments).

Reviewed changes

Copilot reviewed 30 out of 31 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
Cargo.toml	Switches workspace dependency registration for torrust-clock to crates.io 3.0.0.
Cargo.lock	Updates torrust-clock to registry source + checksum for 3.0.0.
packages/axum-health-check-api-server/Cargo.toml	Migrates torrust-clock dependency from path to crates.io version.
packages/axum-http-server/Cargo.toml	Migrates torrust-clock dependency from path to crates.io version (also appears in dev-deps).
packages/axum-rest-api-server/Cargo.toml	Migrates torrust-clock dependency from path to crates.io version.
packages/http-protocol/Cargo.toml	Migrates torrust-clock dependency from path to crates.io version.
packages/http-tracker-core/Cargo.toml	Migrates torrust-clock dependency from path to crates.io version.
packages/metrics/Cargo.toml	Migrates torrust-clock dependency from path to crates.io version.
packages/primitives/Cargo.toml	Migrates torrust-clock dependency from path to crates.io version.
packages/swarm-coordination-registry/Cargo.toml	Migrates torrust-clock dependency from path to crates.io version.
packages/torrent-repository-benchmarking/Cargo.toml	Migrates torrust-clock dependency from path to crates.io version.
packages/tracker-core/Cargo.toml	Migrates torrust-clock dependency from path to crates.io version.
packages/udp-server/Cargo.toml	Migrates torrust-clock dependency from path to crates.io version.
packages/udp-tracker-core/Cargo.toml	Migrates torrust-clock dependency from path to crates.io version.
packages/AGENTS.md	Removes clock from the workspace-layer diagram/catalog and updates the testing note to reference the crates.io crate.
AGENTS.md	Removes clock from the workspace package catalog table.
docs/packages.md	Removes clock from the packages list and catalog table formatting.
docs/issues/open/1879-1669-17-extract-torrust-clock-to-standalone-repo.md	Updates the issue spec metadata/progress, but contains inconsistent statuses/checklists and a duplicate progress log entry (see comments).
docs/issues/open/1669-overhaul-packages/EPIC.md	Marks clock extraction as DONE and links to #1879/spec.
docs/issues/closed/1790-move-duration-since-unix-epoch-to-torrust-tracker-clock.md	Updates issue spec frontmatter status/spec-path for closure, but uses a non-canonical closed status value (see comments).
packages/clock/Cargo.toml	Removes the extracted crate’s in-repo manifest.
packages/clock/README.md	Removes the extracted crate’s in-repo README.
packages/clock/src/lib.rs	Removes the extracted crate’s in-repo library entrypoint.
packages/clock/src/clock/mod.rs	Removes the extracted crate’s in-repo clock module.
packages/clock/src/clock/working/mod.rs	Removes the extracted crate’s in-repo working clock implementation.
packages/clock/src/clock/stopped/mod.rs	Removes the extracted crate’s in-repo stopped clock implementation and tests.
packages/clock/src/conv/mod.rs	Removes the extracted crate’s in-repo conversion helpers and tests.
packages/clock/src/static_time/mod.rs	Removes the extracted crate’s in-repo static time helper.
packages/clock/tests/integration.rs	Removes the extracted crate’s in-repo integration test.
packages/clock/tests/clock/mod.rs	Removes the extracted crate’s in-repo clock test module.

Comments suppressed due to low confidence (3)

docs/issues/open/1879-1669-17-extract-torrust-clock-to-standalone-repo.md:108

• The implementation plan table is internally inconsistent: T6 is marked DONE but its note says the work is deferred, and T10/T13 are still TODO even though the progress log below says they are done and the PR includes those updates. Align the status values (and the Status values: hint) with the actual state (e.g., use DEFERRED for T6 and DONE for T10/T13).
  docs/issues/open/1879-1669-17-extract-torrust-clock-to-standalone-repo.md:136
• The workflow checkpoints currently mark "Source moved with history preserved" and "CI set up and passing" as completed, but the implementation plan/notes and acceptance criteria indicate history preservation and CI are deferred/not yet verified. Update these checkboxes so the checkpoints reflect the actual state.
  docs/issues/open/1879-1669-17-extract-torrust-clock-to-standalone-repo.md:152
• Progress log contains two near-identical entries for the same timestamp/update (T10/T13 done; T11/T12 deferred). Keeping only one avoids confusion when tracking the issue history.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 80.72%. Comparing base (0723daa) to head (d98ddbe).

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1880      +/-   ##
===========================================
- Coverage    80.83%   80.72%   -0.11%     
===========================================
  Files          368      363       -5     
  Lines        27575    27429     -146     
  Branches     27575    27429     -146     
===========================================
- Hits         22291    22143     -148     
+ Misses        4983     4977       -6     
- Partials       301      309       +8     

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[josecelano]

ACK d98ddbe