* Check rate limit and return error message if limited, or null if ok.

* Clear the persisted master key from IndexedDB. * Called during logout to fully clear the session.

* Clear rate limiting state (call on successful unlock).

* Confirms and applies the edited prompt * @param {string} messageId - Message ID being edited

* Copy the current session's URL to clipboard

* Decode share payload (handles both plaintext and encrypted) * @returns {Promise<Object|null>} Payload or null if cancelled/failed

* Derive a unique AES-256 key for a specific blob using HKDF.

* Derive a key from password using Argon2id

* Download a session share * GET /chat/share/{share_id} * @param {string} shareId - Share ID from URL * @returns {Promise<{id: string, salt: string

* Enriches citations with metadata and updates the UI. * @param {Object} message - The message containing citations

* Ensure we have a valid API key for the given chat session. * Keys are stored on the session object and persisted via chatDB. * @param {Obj

* Escapes HTML special characters in text. * @param {string} text - The text to escape * @returns {string} HTML-safe text

* Exports the current chat session to a PDF file. * Delegates to pdfExport service.

* Extracts a meaningful subtitle from reasoning content. * Only uses explicit subtitle markers (## headings or **bold** text). * Returns "Th

* Extracts summaries from reasoning content (headings and bold text). * @param {string} reasoning - The reasoning content * @returns {Array} Array o

* Extracts just the model name from a full "Provider: ModelName" string. * @param {string} fullName - Full model name (e.g., "OpenAI: GPT-5.1 Thinkin

* Finishes inline editing and saves the new title. * @param {HTMLInputElement} input - The input element

* Formats a duration in milliseconds to a human-readable string. * @param {number} durationMs - Duration in milliseconds * @returns {string}

* Formats theme name for display (capitalizes first letter). * @param {string} theme - Theme name * @returns {string} Formatted name

* Generate the expanded details HTML for a log entry

* Generates HTML for the top section (tickets and API key) only.

* Calculate delay for next retry attempt. * @param {number} attempt - Current attempt number (0-indexed) * @param {number} baseDelayMs - Base delay

* Gets raw message content from a data attribute (sync, Safari-safe). * @param {string} messageId - The message ID * @returns {string|null}

* Returns template options for rendering a specific message * @param {string} messageId - Message ID * @returns {Object} Template options