fix: improve telemetry error classification, warehouse validation, and webfetch error context

[anandgupta42]

Summary

Driven by App Insights analysis of altimate-code-os showing ~900 daily events with poor or missing error classification:

• Eliminate blind "unknown error" in telemetry — 89 core_failure events/day had no error message. Now produces soft_failure:{tool}:no_error_metadata with key-aware object masking via Telemetry.maskArgs()
• Add http_error classification — 694 webfetch 404s were classified as "unknown", now properly bucketed as http_error
• Fix SASL/SCRAM password errors — 41 SQL failures/day from non-string passwords. Added type validation in postgres, redshift drivers and registry-level PASSWORD_DRIVERS gate
• Improve webfetch error context — HTTP errors now include the target hostname for easier triage
• Add friendly errors for unsupported databases — ClickHouse, Cassandra, CockroachDB, TimescaleDB get actionable hints instead of generic "unsupported" message
• Redact sensitive keys in input_signature — passwords, tokens, api_keys now show "****" instead of leaking string lengths
• Harden statement_timeout — uses Number.isFinite() guard instead of string interpolation

Files changed (7)

File	Change
src/altimate/telemetry/index.ts	New http_error error_class, expanded classification patterns, sensitive key redaction in computeInputSignature()
src/tool/tool.ts	Structured soft-failure fallback, maskArgs() for object errors, circular-object safety
src/tool/webfetch.ts	Domain hostname in HTTP error messages with safe URL-parse fallback
packages/drivers/src/postgres.ts	Password type validation, statement_timeout hardening
packages/drivers/src/redshift.ts	Password type validation
src/altimate/native/connections/registry.ts	PASSWORD_DRIVERS validation, KNOWN_UNSUPPORTED map with workaround hints
test/telemetry/telemetry.test.ts	20+ new assertions for http_error, expanded patterns, priority ordering

Test plan

• telemetry.test.ts — 90 tests pass (20+ new assertions)
• webfetch.test.ts — 8 tests pass
• warehouse-telemetry.test.ts — 45 tests pass
• tool-error-propagation-complete.test.ts — 90 tests pass
• Typecheck passes (turbo typecheck)

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

Plan: Pro

Run ID: e750e288-0b19-4a82-9ae5-b7c04ef29eaf

📥 Commits

Reviewing files that changed from the base of the PR and between 0226200 and f7f3d8f.

📒 Files selected for processing (7)

• packages/drivers/src/postgres.ts
• packages/drivers/src/redshift.ts
• packages/opencode/src/altimate/native/connections/registry.ts
• packages/opencode/src/altimate/telemetry/index.ts
• packages/opencode/src/tool/tool.ts
• packages/opencode/src/tool/webfetch.ts
• packages/opencode/test/telemetry/telemetry.test.ts

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/telemetry-error-classification-v2

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