ServerDoctor v0.9.2

Two new analysis scanners — plugin compatibility assessment and historical performance regression detection — both running automatically on Paper/Folia, Velocity and BungeeCord.

✨ Added

Compatibility scanner

• 
  []New CompatibilityScanner (core) that assesses each plugin against the running server and aggregates the signals into a transparent 0–100 risk score.
  []Runtime signals (no network): declared api-version vs. the server's Minecraft version (Paper/Folia), whether Folia support can be confirmed, and enabled state.
  []Optional external metadata feed (compatibility.metadata, off by default) adds release age, a Folia yes/no flag and known incompatibilities — honest by design: this data comes from a feed you/the community maintain, never fabricated.
  []Score → severity: <15 OK · 15–39 LOW · 40–69 MEDIUM · 70–89 HIGH · ≥90 CRITICAL.
  []Runs on all platforms; on proxies the Minecraft-version/Folia signals are skipped.
  []PluginInfo gained an apiVersion field (populated by the Paper adapter from plugin.yml).

Historical regression detection

• 
  []New RegressionScanner (core) that compares the older half of stored performance snapshots against the newer half to detect gradual regressions in TPS, MSPT and RAM — catching slow decline over days/weeks, not just spikes.
  []Uses only data already persisted, via an injected PerformanceHistory (limit -> storage.performance().recent(limit)).
  []Runs on all platforms; on proxies TPS/MSPT (NaN) are skipped while RAM is still compared.
  []Thresholds: TPS drop ≥8 %, MSPT rise ≥25 %, RAM rise ≥30 % (with HIGH/CRITICAL tiers); needs ≥8 stored samples. Example finding:
  
  Code (Text):

  Performance regression vs baseline: TPS 19.8 -> 18.4 (-7%); MSPT 14.0ms -> 23.0ms (+64%)

Both scanners surface in /serverdoctor report, the GUI, the REST /report endpoint and webhooks (which fire on state change, so a persisting issue isn't spammed).

Changed

• 
  []ServerDoctorCore.bootstrap now accepts a single ScannerSources object bundling the optional advisory, compatibility and performance-history sources. The previous overloads (bootstrap(platform), …, AdvisorySource, …, AdvisorySource, CompatibilityMetadataSource) are kept and delegate to it — no caller is forced to change.
  []PluginInfo gained a 7th component apiVersion; the prior 6-argument constructor is retained (delegates with an empty api-version), so existing adapters, tests and the REST serializer compile unchanged.

Setup (new optional config)

Regression detection needs no config — it works once PerformanceHistory is wired into bootstrap (one line per platform; storage must be opened before bootstrap). Both scanners are registered automatically; unwired optional sources simply stay quiet.

Full Changelog:
https://github.com/Shvquu/server-doctor/compare/v0.9.0...v0.9.2