feat: upgrade platform-go to v10.0.0

[verygoodsoftwarenotvirus]

Upgrades github.com/primandproper/platform-go from v7.1.1 → v10.0.0.

Breaking API changes

1. config.LoadFromJSONFile now takes a context.Context. LoadFromFile threads its existing ctx through.
2. logging.LevelsEqual is gone. Level is now a string-backed value type, so == compares the level directly — the six assertions it backed become assert.Equal/assert.Equalf.

Behavior change worth a look

v10 relaxed logging validation, which invalidated the premise of two tests:

• ServiceName is now required only for providers that export telemetry (otelslog).
• The empty provider remains the documented opt-out into noop logging.
• An unrecognized provider is now a hard error instead of silently disabling logging.

So neither a slog config omitting a service name nor a zero Config fails validation any more. Both tests now use an unrecognized provider (which v10 rejects outright), and a new test pins the permissive behavior so it stays deliberate rather than accidental. The LoadFromFile doc comment no longer promises the old rule.

⚠️ Deployment note: a mounted config file that previously failed fast on a missing service name will now boot with an empty one. Nothing committed here is affected — both config/*.json specify a service name — but it's worth knowing before rolling out.

Regenerated configs

config/localdev.json and config/production.json shrink because v10 marks the pillar sub-configs omitempty, so zero-valued tracing/metrics/profiling blocks stop serializing. Semantically identical: empty pillars still resolve to noop.

Drive-by lint fix

Render's two loops now index instead of copying the 40-byte Environment per iteration, satisfying gocritic's rangeValCopy against the repo's configured 32-byte threshold. This was already failing on main before this upgrade (verified by linting the v7 baseline); fixed here so the branch lands lint-clean.

Verification

• make build, make test — pass
• make lint — 0 issues, shellcheck clean
• make configs — idempotent
• Smoke-tested the binary: version bare, with --config config/localdev.json (debug logs), and with --config config/production.json (quiet at info); confirmed TEMPLATE_GO_OBSERVABILITY_LOGGING_LEVEL still overrides the file.

🤖 Generated with Claude Code