v0.2.3 — UI-editable encrypted provider API key (#6)
Squash-merge PR #6: PR Vision v0.2.3 — UI-editable encrypted provider API key
QA APPROVED: 2026-06-14-85956da7c86bed2c9e2cf60625fda0cf2e9518bb.md
All 5 CI checks green on head SHA 85956da7c8
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CONTEXT.md
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CONTEXT.md
@@ -126,3 +126,18 @@ The plugin's scores are API-probe measurements, not real-world consumer LLM usag
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Month-to-date spend in USD, summed from the `cost_usd` column for rows in the current calendar month.
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**Code identifiers:** `PRV_Cost_Ledger::get_month_to_date_usd()`.
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### Key Store (v0.2.3)
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The subsystem that manages the OpenRouter API key with a precedence chain and encrypted-at-rest storage. Precedence: `PRV_OPENROUTER_API_KEY` wp-config constant (highest) → encrypted admin option `prv_provider_key_enc` → none. All key reads by providers and AJAX handlers route through `PRV_Key_Store::get_key()`. The plaintext key is never stored in any option, log, or client-side surface.
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**Code identifiers:** `PRV_Key_Store`, `PRV_Key_Store::get_key()`, `PRV_Key_Store::store_key()`, `PRV_Key_Store::clear_key()`, `PRV_Key_Store::get_source()`, `prv_provider_key_enc` option.
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### Write-only Key UI (v0.2.3)
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The Settings page section that allows the operator to set/replace/clear the API key without the key ever being rendered in the browser. The password input always renders empty. The UI shows only the key *source* (wp-config / admin / not set) and the last-run health state. The key value is never output to page HTML, JS, REST responses, or logs.
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**Code identifiers:** `PRV_Key_Manager_Renderer`, `PRV_Key_Test_Ajax`, `PRV_Settings_Controller::handle_key_set()`, `PRV_Settings_Controller::handle_key_remove()`.
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### Encryption Key (v0.2.3)
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The symmetric key used to encrypt/decrypt `prv_provider_key_enc`. Derived via SHA-256 from `AUTH_KEY + SECURE_AUTH_KEY` (or `wp_salt()` fallback) — environment-specific and never stored. Derived fresh at every encrypt/decrypt call.
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**Code identifiers:** `PRV_Key_Store::derive_encryption_key()`, `PRV_Crypto_Helper::encrypt()`, `PRV_Crypto_Helper::decrypt()`.
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