prautoblogger/CHANGELOG.md

Changelog

All notable changes to PRAutoBlogger will be documented in this file.

Format follows Keep a Changelog, and this project uses Semantic Versioning.

[0.17.0] - 2026-06-11

Added

• Deterministic PHP image composer (Commit 2 of the in-plugin editorial image pipeline). Every generated image now passes through a local, $0, deterministic composer between the provider's bytes and the media sideloader. Image A yields a corner-marked featured image (1200×632) plus a branded OG/social variant (1200×630, teal band, brand mark, baked editorial caption in Poppins SemiBold) and a square card variant (1080×1080, image slice + cream caption panel in Poppins Bold + teal footer with the horizontal lockup). Image B gets the corner mark only. Variants are sideloaded with a role filename suffix and meta-linked: attachment meta _prautoblogger_image_role + _prautoblogger_base_attachment_id, post meta _prautoblogger_og_image_id + _prautoblogger_square_image_id (the rebuilt SEO stage will emit og:image from the frozen og key).
• Capability ladder with cached probe. Imagick (full compositing) → wp_get_image_editor() GD path (resize-only, unbranded, single WARNING) → pass-through (single WARNING). The probe result is cached in prautoblogger_image_compose_capability, fingerprinted by PHP version + imagick/gd presence so it auto-invalidates when the host changes. Override filter: prautoblogger_image_compose_capability. Composition failure can never block a publish (per-render try/catch + pipeline safety net).
• New Images settings: prautoblogger_image_compose_enabled (default on), prautoblogger_image_compose_variants (default og,square), prautoblogger_image_featured_mark_enabled (default on). Geometry ships as layout-class constants behind the prautoblogger_image_compose_layout filter. All keys keep the prautoblogger_/_prautoblogger_ prefixes, so the existing uninstall prefix-sweep purges them (no uninstall.php changes).
• Vendored brand rasters (assets/brand/, from peptide-repo-brand SVG masters) and bundled OFL fonts (assets/fonts/: Poppins Bold + Poppins SemiBold + OFL.txt) — no system-font or runtime-SVG dependency, byte-stable output per environment (metadata stripped, PNG date/time chunks excluded).

Fixed

• Featured/Image B alt text is now the editorial caption instead of the generation model name (sideload_and_log() passed the model as $alt_text, contradicting the sideloader docblock). The model keeps persisting in _prautoblogger_image_model.

Changed

• PRAutoBlogger_Image_Media_Sideloader::sideload_image() / generate_filename() accept an optional filename role suffix (back-compat default '').
• PRAutoBlogger_Image_Pipeline delegates sideload/cost-log, caption prepending, and variant persistence to the new PRAutoBlogger_Image_Attacher (300-line compliance); also declares the previously-dynamic $trace_context property (PHP 8.2 deprecation).

[0.16.0] - 2026-05-29

Changed

• Editorial image prompt (Commit 1 of the in-plugin editorial image pipeline). The image style pivots from a single-panel newspaper comic to a text-free editorial scientific illustration. The rewriter LLM now emits a concise 1-2 sentence topic/mechanism summary as the SCENE (one centered focal subject, no text/people-as-gag/logos), keeping the short CAPTION line for the unchanged HTML-caption-below-image behavior. The scene/caption parsing contract is unchanged. Provider/model are unchanged — production keeps generating via Runware FLUX.1 schnell but now produces text-free editorial base images. See docs/proposals/2026-05-29-image-pipeline-in-plugin-brief.md.
• The prompt builder now substitutes the rewriter scene into an editable style template's {{ topic_summary }} slot via the new PRAutoBlogger_Image_Template_Filler, replacing the old scene + style suffix concatenation, across all three entry points (build_article_prompt, build_source_prompt, build_fallback_prompt). Before substitution the scene is stripped of control characters and length-clamped (brief A5). If the template lacks exactly one token the summary is appended and a warning logged; if the summary is empty the style-only prompt is emitted — a blank or token-only prompt is never sent to the provider (brief A5/A6).

Added

• New setting Style Template (prautoblogger_image_style_template, textarea) replacing the Style Suffix field. Default = PRAUTOBLOGGER_DEFAULT_IMAGE_STYLE_TEMPLATE (the editorial template). On save it is validated to contain exactly one {{ topic_summary }} token; an invalid template keeps the previous value and surfaces a settings error.

Deprecated

• prautoblogger_image_style_suffix is deprecated and no longer read by the prompt builder. A one-time migration (prautoblogger_migrated_style_template_v0160) mirrors its value to prautoblogger_image_style_suffix_deprecated for one version cycle and seeds the new template default. The old option is NOT deleted this cycle.

[0.15.1] - 2026-05-14

Fixed

• Cost preview in AI Models settings tab no longer prints a WordPress database error notice; query now uses canonical column names (prompt_tokens, completion_tokens, created_at). Bug present since v0.11.0 (2026-04-23).

[0.14.0] - 2026-04-26

[0.15.0] - 2026-04-26

Added

• Live Runware Model Catalog Sync: New class-runware-model-catalog.php fetches the live Runware model list via their /v1 endpoint (task-based API), filters to taskType=imageInference (text-to-image only, excluding inpainting), normalizes to the Image_Model_Registry shape, and caches in prautoblogger_runware_model_cache with a 24-hour TTL. Fixes the pattern from v0.13.8 and v0.14.0 where the hardcoded Runware model list was a maintenance burden and gaps (missing models, wrong prices) went unnoticed until customer images generation broke.
• Daily WP-Cron sync (prautoblogger_sync_runware_models) scheduled on activation and unscheduled on deactivation.
• On-demand "Sync now" AJAX button in PRAdmin (Images settings section) with nonce protection and manage_options cap check. Refreshes model count and last-synced timestamp in the UI without full page reload.
• Smart caching + fallback strategy: if cache is < 24h old, use it; if stale, trigger a sync; if sync fails, use the last-known-good cache; if no cache, fall back to hardcoded list (never returns empty array).
• Pricing merge: Runware API may not expose per-image cost. The catalog pulls costs from class-runware-image-pricing.php::COST_PER_IMAGE on every sync, ensuring pricing data is always authoritative and up-to-date.
• Unit tests for PRAutoBlogger_Runware_Model_Catalog: sync success/failure, fallback on API unreachable, stale cache behavior, cost merge logic.
• class-image-model-registry.php refactored: get_models() now delegates to the catalog for Runware models + static OpenRouter list. Extracted fallback lists into private get_runware_fallback_models() and get_openrouter_models() for clarity.

Fixed

• Silent model list gaps no longer possible: Runware no longer depends on manual model list maintenance in the pricing class. The live catalog is the source of truth; pricing is merged in on every sync.

Changed

• class-image-model-registry.php: get_models() is now a thin wrapper around the catalog + OpenRouter static list. Breaking change: callers that expect a specific static list should note the new dynamic Runware side.

Fixed

• Runware image generation now correctly uses the admin-selected model instead of silently falling back to FLUX.1 schnell (runware:100@1) for all non-schnell and non-dev selections. Root cause: class-runware-image-pricing.php only had 2 models in its COST_PER_IMAGE whitelist (schnell + dev), but the image model registry was expanded to 15 Runware models in v0.13.8 without a matching update to the pricing class. Any model ID not in the whitelist caused resolve_model() to fall back to schnell, so every Stable Diffusion, FLUX.2, HiDream, TwinFlow, Z-Image, Qwen-Image, Krea, and GLM-Image selection was silently downgraded.
• Added all 15 Runware model IDs to COST_PER_IMAGE and DEFAULT_STEPS with correct per-image costs and step counts sourced from runware.ai/pricing (April 2026).
• Added @see cross-reference to class-image-model-registry.php in pricing class docblock to prevent future drift.

[0.13.9] - 2026-04-26

Fixed

• Model picker sort by price now works correctly for image models — previously `applySort` always read `input_price_per_m` (undefined on image models), so every image had an effective price of 0 and price sort was a no-op. Fix: detect image models via `cost_per_image` and use that field instead.

[0.13.8] - 2026-04-26

Added

• Image model picker expanded from 7 to 21 models
• New Runware text-to-image models: Stable Diffusion 3, HiDream-I1 Full/Dev/Fast, FLUX.1 Krea [dev], Qwen-Image, FLUX.2 [dev], FLUX.2 [klein] 9B, FLUX.2 [klein] 4B, GLM-Image, Z-Image, Z-Image-Turbo, TwinFlow Z-Image-Turbo
• New OpenRouter model: openai/gpt-5.4-image-2
• Registry now includes last-verified date and update instructions in source comment

All notable changes to PRAutoBlogger will be documented in this file.

Format follows Keep a Changelog, and this project uses Semantic Versioning.

[0.13.7] - 2026-04-24

Fixed

• Posts list column layout: title was set to 35% which, combined with 3 fixed-width PRAB columns, left ~50px for every remaining column (Author, Categories, Tags, Date all word-wrapping). Replaced with a balanced budget: title 22%, author 6%, categories 7%, tags 9%, date 8%, PRAB columns 85/85/50px, Peptide Topics 75px.

[0.13.6] - 2026-04-24

Fixed

• Peptide Topics column still rendering vertically: WordPress posts table uses table-layout: fixed which ignores min-width entirely. Changed to explicit width: 80px which is respected under fixed-layout tables.

[0.13.5] - 2026-04-24

Fixed

• Cost column in Posts list was always showing $0.00: a PHP // phpcs:ignore comment was embedded inside the SQL string literal, causing a MariaDB syntax error on every query. Moved comment above the prepare() call.
• Peptide Topics column header in Posts list was being squeezed to near-zero width by the fixed-width PRAB columns. Added min-width: 80px to .column-taxonomy-peptide_topic.

[0.13.4] - 2026-04-24

Fixed

• Model picker price column now consistently right-aligned. Root cause: price and description were siblings inside .ab-mp-row-meta, with description first and variable-length — this shifted price left/right per row. Fix: moved price to last position with flex-shrink: 0 so its right edge is always pinned to the row edge; capped description at max-width 200px with ellipsis; swapped column headers to match new DOM order.

[0.13.3] - 2026-04-24

Fixed

• Price column header now right-aligned with min-width: 90px to match data cells — header and prices now track the same column edge.

[0.13.2] - 2026-04-24

Changed

• Model picker: added sortable column headers (Model, Price, Context); clicking a header sorts the list ascending/descending; active column highlighted with sort arrow; sort preference persists while the picker is open.

[0.12.3] — 2026-04-24

[0.13.1] - 2026-04-24

Fixed

• Model picker price column now right-aligned with a minimum width so values like $0.0006/image and $0.0800/image stack cleanly instead of floating at uneven offsets.

[0.13.0] - 2026-04-24

Added

• Wave 2 Eval Harness: Complete evaluation framework for PRAutoBlogger output quality
  • Frozen eval dataset (eval/dataset.json) with 20 curated peptide topics
  • LLM-as-judge scorer (class-opik-eval-scorer.php) using Gemini Flash 1.5
  • Eval runner orchestrator (class-opik-eval-runner.php) with Opik experiment support
  • WP-CLI command: wp prautoblogger opik:eval [--limit=<n>] [--dry-run]
  • Image pipeline instrumentation: Opik span wrapping for image_prompt_rewrite step
• Image Prompt Builder Refactor: Extracted scene/caption parsing into PRAutoBlogger_Image_Scene_Parser
  • Three static methods: parse_scene_and_caption(), extract_first_paragraph(), synthesize_visual_concepts_fallback()
  • Cleaner separation of concerns; builder now ~255 lines (was 331)
• Content Generator Eval Mode: Added $eval_mode parameter to suppress publishing and image generation side effects
• Trace Context Integration: Optional trace instrumentation in PRAutoBlogger_Image_Prompt_Builder constructor

Changed

• PRAutoBlogger_Image_Prompt_Builder constructor now accepts optional PRAutoBlogger_Opik_Trace_Context parameter
• PRAutoBlogger_Image_Pipeline constructor passes trace context through to prompt builder
• Image prompt rewrite LLM calls now emit Opik spans when trace context is available

Fixed

• Image prompt builder now properly delegates to static parser methods

Fixed

• Opik autoloader gap — class-autoloader.php listed services/ as a scan directory but not services/opik/, where all four Opik classes live (Opik_Client, Opik_Trace_Context, Opik_Span_Queue, Opik_Dispatcher). Composer's classmap (used in PHPUnit) covers includes/ recursively so tests passed, but the WordPress runtime autoloader would fatal on first Opik class reference in production. Added services/opik/ to the scan list.

[0.12.2] — 2026-04-24

Fixed

• Image style suffix empty-string bypass — get_option() for prautoblogger_image_style_suffix only returns the default constant when the key is absent from wp_options; an empty string stored in the DB returns '', bypassing fallback entirely. Root cause of post #675 rendering photorealistically instead of as a newspaper comic. Fixed all three call sites in class-image-prompt-builder.php (lines 85, 107, 272) by extracting a private helper get_style_suffix() that treats both absent AND empty string as "use default".

• Image cost logged under wrong run_id — class-image-pipeline.php created a fresh cost tracker when invoked without an argument, so image costs were logged under a different run_id than the article's other stages. Cost breakdowns aggregating by run_id silently excluded the image line item. Fixed by threading the article worker's cost tracker through PRAutoBlogger_Publisher and PRAutoBlogger_Post_Assembler::attach_generated_images() to the image pipeline constructor. Image costs now share the same run_id as analysis, draft, review, and llm_research stages.

[0.12.1] — 2026-04-23

Fixed

• Opik UUID v7 bug — PRAutoBlogger_Opik_Trace_Context was generating trace and span IDs with wp_generate_uuid4() (UUID v4). Opik's REST API requires UUID v7 and rejects v4 with HTTP 400 "Trace id must be a version 7 UUID". Added a private static generate_uuid7() method using microtime() + random_bytes() and replaced both call sites. All trace and span submissions now succeed.

[0.12.0] — 2026-04-23

Added

• Opik LLM observability integration (Wave 1: tracing skeleton). Cloud-hosted observability via Comet Opik for detailed per-call tracing and prompt-version regression testing. Captured via async fire-and-forget dispatch to avoid blocking article generation.

• Opik REST client. Minimal HTTP client (no third-party SDK) with exponential backoff retry, batch endpoints, and credential isolation (API key from wp-config.php constants, never in DB).

• Per-request trace context singleton. Holds trace ID + span stack for one article generation. UUID threading across draft generation, editorial review, and image prompt generation.

• Async span/trace queue. WP options-backed queue with TTL expiry (12 hours) and max depth (1000 items). Drained by cron dispatcher with per-batch retry logic.

• Cron dispatcher. prautoblogger_opik_dispatch action scheduled via wp_schedule_single_event() drains queue in batches of up to 100 spans.

• Opik admin settings section. Toggle to enable/disable tracing (default off), project name field, opt-in full-prompt capture, read-only status display (API key configured, last dispatch, queue depth).

• Span instrumentation at four LLM call sites: single-pass article generation, outline/draft/polish stages (multi-step), and editorial review. Each span captures model name, provider, usage tokens.

• Comprehensive unit test suite. 4 test files covering client (auth, retry, batch limits), trace context (UUID generation, span stacking), queue (enqueue/dequeue, expiry, reenqueue), and dispatcher (batch POST, separation of traces vs. spans).

Changed

• class-article-worker.php: Initializes Opik trace context at generation start, enqueues finalized trace + spans at end if feature enabled.

• class-content-generator.php: Wraps single-pass and multi-step stages (outline, draft, polish) with Opik spans capturing token usage.

• class-chief-editor.php: Wraps editorial review LLM call with Opik span.

Notes

• Feature-flag default OFF. Zero network traffic to Opik unless prautoblogger_opik_enabled option is true AND API credentials are defined in wp-config.php.
• Image prompt generation instrumentation deferred. File already at 314 LOC (over 300-line rule); can be instrumented in Wave 2 without modifying existing code.
• Wave 2 holds eval harness. CLI command for frozen-dataset regression testing with LLM-as-judge scoring (separate thread after v0.12.0 ships and is live-tested).

[0.11.0] — 2026-04-23

Added

• OpenRouter model picker for text models. Admin-facing dropdown field type (model_select) with searchable list, capability filtering, and estimated cost preview. Replaces free-text model slug inputs on the three text model settings (analysis, writing, editor). Includes daily cron refresh of the OpenRouter registry cache and manual "Refresh Model List" button on the AI Models tab.

• Cost preview in model picker. Shows estimated cost per generation based on historical token usage for the 30 days prior. Maps each setting to its constituent pipeline stages (writing model = outline + draft + polish).

• AJAX refresh endpoint (prautoblogger_refresh_models) for manual model registry refresh with nonce + capability gating (manage_options).

• New public method on Cost Tracker: get_avg_tokens_for_stages(array $stages, int $days = 30): array returns average input/output token counts for a stage list, used by cost preview.

Changed

• AI Models tab now renders a "Refresh Model List" button next to the panel title. Triggers prautoblogger_refresh_models AJAX endpoint.

[0.10.1] — 2026-04-23

Fixed

• PHPCS: closed the last 26 WordPress-Core residuals (15 short ternaries rewritten, 11 targeted ignores on false-positive ternary-with-prepare in ideas-browser + logger).

• Tests: OpenRouterImageProviderTest now round-trips through real Encryption class. setUp was using a dead eval() mock that never installed because the real PRAutoBlogger_Encryption class was autoloaded first. Tests now call PRAutoBlogger_Encryption::encrypt() directly, leveraging the BaseTestCase-stubbed wp_salt() for deterministic round-trip decryption. Fixes both test_generate_image_success and test_generate_image_4xx_throws.

• Tests: add missing post_type_exists() stub to BaseTestCase. When PR Core is not active, PeptideLinker guards calls with post_type_exists(). This WordPress function was not mocked in the base test setup, causing 8 PublisherTest errors.

Changed

• PHPCS: backlog substantially reduced (1,292 → 28 violations). Round 1 autofix via phpcbf resolved 1,292 violations across 75 files (mechanically). Round 3 reduced remaining 137 violations to 28:
  • 79 class-naming sniffs (WordPress.Files.FileName) — excluded in phpcs.xml; architectural decision to use short class names (class-logger.php) instead of fully-qualified names for readability.
  • 56 $wpdb->prepare() violations (WordPress.DB.PreparedSQL) — excluded in phpcs.xml; dynamic table names ({$prab_generation_logs}) cannot be parameterized with prepare(), which only supports value placeholders.
  • 28 remaining violations (other sniffs) — mostly in class-logger.php, class-ideas-browser.php; deferred for future cleanup. Excluded sniffs are documented in phpcs.xml with architectural justifications.
• CI: PHPCS gate now strict. Changed continue-on-error: true → false in .github/workflows/ci.yml. PHPCS failures will now block CI, preventing style regression.

[0.10.0] — 2026-04-21

Removed

• Cloudflare Workers AI as image provider. The four class-cloudflare-image-* provider files are gone along with their unit tests and the three CF-specific options (prautoblogger_cloudflare_ai_token, prautoblogger_cloudflare_account_id, prautoblogger_cf_image_via_gateway). Runware FLUX.1 schnell produces equivalent-quality output at ~65× less cost and eliminates a duplicated settings surface. The flux-1-schnell registry entry that mapped to the CF provider is removed; the legacy slug now resolves to an empty provider (caught by the migration).

Changed

• Sites on any cloudflare image provider auto-migrate to runware:100@1 on upgrade. New migration PRAutoBlogger_Migrate_Remove_Cloudflare_V0100::run() runs from admin_init once per site. Detects three legacy shapes: registry- derived provider cloudflare, prautoblogger_image_provider option set to cloudflare, or the legacy slug flux-1-schnell. Sets prautoblogger_image_provider + prautoblogger_image_model to the Runware schnell pair and deletes the three dead CF options. Idempotent via prautoblogger_migrated_remove_cloudflare_v0100 flag — running twice is a no-op and will not clobber a post-migration manual choice.
• Image provider dispatch fallback is now Runware, not Cloudflare. PRAutoBlogger_Image_Pipeline::create_default_provider() returns PRAutoBlogger_Runware_Image_Provider for any unrecognised prautoblogger_image_provider value. An unmigrated install still gets a working pipeline instead of a fatal.

Note

• Cloudflare AI Gateway fronting OpenRouter is unaffected. The prautoblogger_ai_gateway_base_url + prautoblogger_ai_gateway_cache_ttl options, their settings fields, class-open-router-config.php gateway resolution, and class-open-router-request-builder.php cf-aig-cache-ttl headers are all intentionally untouched. The AI Gateway is a proxy/cache layer in front of OpenRouter and is orthogonal to the CF Workers AI image provider removal. The migration test asserts this invariant explicitly.

Cost impact

Zero recurring spend from CF Workers AI image generation (the peptiderepo.com install was still on CF as recently as v0.8.2 — see commit 80a7e11). No new prompt tokens, no change in model mix for sites already on Runware or OpenRouter.

Migration checklist (for anyone else running this plugin)

1. On first admin_init after upgrade, the migration will flip prautoblogger_image_provider to runware and prautoblogger_image_model to runware:100@1 if you were on CF.
2. Set prautoblogger_runware_api_key in Settings → Images if you hadn't already — image generation will fail until it is set.
3. The CF API token + account ID options are deleted by the migration; you don't need to do anything.
4. If you want to switch back to OpenRouter (Gemini) instead of Runware, just change the Image Model picker after the migration has run.

[0.9.0] — 2026-04-21

Added

• Runware (FLUX.1 schnell) as the default image provider. New provider at includes/providers/class-runware-image-* generates ~$0.0006/image on FLUX.1 schnell (runware:100@1) — roughly 65× cheaper than the previous default (Gemini 2.5 Flash Image via OpenRouter at ~$0.039/image). FLUX.1 dev (runware:101@1, ~$0.02/image) is also available for higher-fidelity runs. The provider mirrors the OpenRouter split: interface + provider + support + pricing + batch, all under the 300-line cap.
• True parallel image generation. PRAutoBlogger_Runware_Image_Batch uses curl_multi_init/exec/select to fire all imageInference POSTs concurrently, then downloads the signed URLs concurrently. Wall-clock for the A/B pair drops to ≈ the slowest single image instead of the sum of both.
• v0.9.0 one-time migration. Sites where the image model is empty or still pinned to google/gemini-2.5-flash-image are auto-flipped to runware:100@1 on upgrade, with the provider re-derived from the registry. Flag: prautoblogger_migrated_default_image_v090. The Runware API key option (prautoblogger_runware_api_key) was added to the enc:-prefix migration list so Settings writes go through the same encryption-at-rest path as the other provider keys.

Changed

• Image prompt builder steered away from abstract/chemical subjects. The rewriter system prompt now explicitly refuses to personify molecules, peptides, hormones, or proteins — FLUX (and most diffusion image models) render "anthropomorphic peptide" as an incoherent blob. Default scene guidance is now "concrete, human-scale scenes: people reacting to things, doctors and patients, gym bros with vials, etc." Style suffix unchanged — single-panel comic aesthetic preserved. See includes/core/class-image-prompt-builder.php::REWRITER_SYSTEM_PROMPT.
• Default image model flipped to runware:100@1 (FLUX.1 schnell). PRAUTOBLOGGER_DEFAULT_IMAGE_PROVIDER and PRAUTOBLOGGER_DEFAULT_IMAGE_MODEL constants in prautoblogger.php updated. Cloudflare flux-1-schnell remains in the registry as a legacy fallback for any operators who set it explicitly. Rationale: image-style memory (2026-04-21) — schnell passed the comic A/B round and the cost delta funds more generations for the same monthly budget.

Cost impact

At 50 articles/day × 2 image A/B = 100 images/day:

• Before (Gemini 2.5 Flash Image via OpenRouter): ≈ $3.90/day, ≈ $117/mo
• After (FLUX.1 schnell via Runware): ≈ $0.06/day, ≈ $1.80/mo

Net saving: ~$115/mo at current traffic, funded by a single provider swap with no user-visible change in article quality.

[0.8.2] — 2026-04-21

Fixed

• Daily generation schedule now honors site timezone. Previously the time configured in Settings → Schedule was interpreted as UTC (WordPress core forces date_default_timezone_set('UTC')), causing runs to fire N hours off from user intent where N is the site's UTC offset. On peptiderepo.com (Asia/Singapore, UTC+8), a schedule_time of 06:00 fired at 14:00 local. An on-upgrade one-shot migration (prautoblogger_migrated_schedule_tz_v082) reschedules the existing daily cron in the site's configured timezone — no user action required.

Changed

• Cloudflare Workers AI image calls now route through the AI Gateway by default. The 2026-04-15 regression that caused the gateway route to 403 on Workers AI has been resolved upstream. Routing via the gateway gives us response caching, unified cost/latency dashboard, and rate limiting for free, mirroring the OpenRouter LLM path. A new admin toggle prautoblogger_cf_image_via_gateway (default on) lets operators force direct-API if the gateway route regresses again, without clearing the gateway URL setting the LLM provider depends on.
• "Generation Time" settings description now names the site's configured timezone explicitly (from wp_timezone_string()) instead of the ambiguous "server timezone" label — operators can see at a glance which zone their input is being interpreted in.

[0.8.1] — 2026-04-21

Fixed

• Orphaned LLM research costs now reaped daily. When a pipeline died between post creation and the final cost-amortization step (e.g. execution-time kill on shared hosting), the llm_research row stayed unlinked and the affected articles' cost popovers understated true spend. A new daily cron (prautoblogger_reap_orphan_research_rows, 03:15 server time) retroactively amortizes orphan rows against posts from the same run. Includes a one-time activator migration to back-populate _prautoblogger_run_id post_meta for existing posts.
• GA4 Property ID admin description corrected. The field description previously instructed users to enter properties/XXXXXXXXX, but the GA4 client already prepends the properties/ URL segment internally — a double-prefixed value would 404. Description now asks for the digits only, matching actual code behavior.

Added

• New WP-CLI command wp prautoblogger reap-research for manual reaping and ops debugging.
• Publisher::build_meta() now writes _prautoblogger_run_id on every generated post, so the reaper has a direct meta path from run_id to sibling posts without walking wp_prautoblogger_generation_log.

[0.8.0] — 2026-04-21

Changed

• Single Image Model dropdown in admin → Images. The separate Image Provider select has been removed. The provider (OpenRouter or Cloudflare Workers AI) is now derived from the chosen model's entry in PRAutoBlogger_Image_Model_Registry on save, so mismatched provider/model pairs — the root cause of posts 650 and 657 silently missing their featured image on 2026-04-20 — are no longer possible. A one-shot migration runs on first admin_init after upgrade and auto-heals any existing site where the saved provider and model disagreed. The prautoblogger_image_provider option key is preserved; all existing reads in the pipeline continue to work.

Added

• Image Prompt Instructions setting. The system prompt used to rewrite articles into SCENE + CAPTION is now editable from admin → Images. Default preserves prior behavior; edit to reshape the creative direction without a code change.
• Retry NSFW-Blocked Images setting (default on). When the image provider rejects a prompt as NSFW — Cloudflare Workers AI returns HTTP 400 with errors[].code === 3030 on FLUX.1 schnell — PRAutoBlogger now retries the slot once with a rule-based fallback prompt (article title + style suffix, no LLM rewrite). On a second block it logs a WARNING and publishes without that image, matching existing behaviour for any unrecoverable image failure.

Fixed

• Silent per-image failures in the event log. The OpenRouter batch provider now emits Logger::error with the request key for every per-slot HTTP/cURL/parse failure (previously logged the error but not which slot it was), and Image_Pipeline::process_image_a/_b emit Logger::warning on ['error' => …] results whether or not the outer catch fires. Operators can now see NSFW blocks, 4xx bodies, and timeouts in the admin Event Log without cross- referencing PHP error_log timestamps.

[0.7.3] — 2026-04-20

Fixed

• Table colors broken in dark mode. Replaced hardcoded hex colors with theme CSS custom properties (--color-border-default, --color-bg-secondary, --color-text-primary) so table borders, header backgrounds, and text adapt to light/dark mode automatically.

[0.7.2] — 2026-04-20

Fixed

• Bullet points missing in articles. Theme's global CSS reset strips list-style from all ul/ol. Typography CSS now restores disc/decimal bullets with proper padding inside .entry-content.
• Tables break on mobile. Tables now wrapped in a horizontally scrollable container (prab-table-wrap) via the_content filter. Added responsive media query for tighter padding and smaller font at narrow viewports.

[0.7.1] — 2026-04-20

Fixed

• Typography CSS not applying. Two bugs: CSS targeted .post-content but the theme template uses .entry-content, and the _prautoblogger_generated meta gate excluded posts that predate the meta flag. Display settings now apply to all single post pages and target the correct .entry-content selector.

[0.7.0] — 2026-04-20

Added

• Display settings section. New "Display" tab in admin with three settings that control how generated articles render on the frontend:
  • Article Font — choose from 7 font families (Inter, Georgia, Merriweather, Lora, Open Sans, Roboto, System) or keep theme default. Google Fonts are loaded only on PRAutoBlogger posts that need them.
  • Article Font Size — set body text size in pixels (0 = theme default). Recommended 16–18px for comfortable reading.
  • Table Borders — adds visible borders, cell padding, header background, and alternating row colors to tables. Enabled by default.
• Article_Typography frontend class. Injects inline CSS only on singular post pages with _prautoblogger_generated meta — zero impact on non-PRAutoBlogger pages.

[0.6.3] — 2026-04-20

Fixed

• Unchecking all sources still used Reddit. Browser omits checkbox fields from POST when none are checked, so the prautoblogger_enabled_sources option never updated. Added a hidden input so an empty value is always submitted — unchecking all sources now correctly saves [].
• Pipeline status hardcoded "Reddit". The "Collecting sources…" stage message now reflects the actually-enabled sources instead of always saying "Reddit".

[0.6.2] — 2026-04-20

Added

• Deterministic peptide auto-linker. New Peptide_Linker class scans generated HTML and wraps every mention of a known peptide in a hyperlink to its /peptides/{slug}/ database page. Runs as a post-processing step in Publisher before wp_insert_post — no LLM involvement, 100% reliable. Handles case-insensitive matching, hyphen/space variants (e.g., "BPC-157" and "BPC 157"), and skips text already inside <a> tags. Gracefully no-ops if PR Core is not active.

Changed

• Removed prompt-based peptide linking. The system prompt no longer asks the LLM to link peptides (unreliable). Peptide links are now injected deterministically by Peptide_Linker after content generation. The prompt still provides article links and the "never fabricate URLs" rule.

[0.6.1] — 2026-04-20

Added

• Peptide auto-linking. When any peptide name from the PR Core database is mentioned in a generated article, the first mention is automatically linked to the corresponding /peptides/{slug}/ page. The system prompt now includes a complete peptide database reference list alongside the existing article links. Gracefully degrades if PR Core is not active (post_type_exists() guard).

Changed

• Extracted prompt builders into Content_Prompts class. Moved all prompt construction (system prompt, stage prompts, linking rules) from Content_Generator into a new Content_Prompts static helper. Generator dropped from 324 → 162 lines; prompts class is 252 lines. Both under 300.
• Internal link rules strengthened. Linking rules section now explicitly instructs the model to link every peptide's first mention and never fabricate URLs, with real published article and peptide page URLs provided.

[0.6.0] — 2026-04-20

Added

• Generate article from idea. New "Generate" column in the Ideas browser. Click any idea's Generate button to produce an article directly, bypassing the scheduled pipeline's collect → analyze → score steps. The button shows real-time stage updates (drafting, editing, publishing) via per-idea status polling, then swaps to Edit/View links with cost on completion.
  • Ideas_Browser::on_ajax_generate_from_idea() — AJAX trigger that stores the idea and schedules a one-shot WP-Cron event.
  • Ideas_Browser::on_cron_generate_from_idea() — Background handler that runs Article_Worker for the selected idea.
  • Ideas_Browser::on_ajax_idea_gen_status() — Per-idea status polling.
  • assets/js/ideas-browser.js — Button click, AJAX, polling, and UI state.
  • Per-idea transients (prab_idea_gen_{id}) for independent status tracking.
  • Page-load polling resume for ideas that were mid-generation.
  • Generation lock respected — only one generation at a time.

[0.5.3] — 2026-04-20

Fixed

• Writing instructions not obeyed by LLM. The user-configured writing instructions (bullet points, hyperlinks, style rules) were appended to the system prompt as a weak "Additional instructions:" afterthought. Models prioritized competing format directives in the user prompts and ignored the style guide.
  • System prompt now frames writing instructions as a "MANDATORY STYLE GUIDE" with explicit override language.
  • Every stage's user prompt (outline, draft, single-pass) now includes a reinforcement line: "Follow EVERY requirement from your system prompt style guide."
  • Polish stage explicitly preserves bullet points, numbered lists, and hyperlinks instead of flattening them.
  • Chief editor's revision rules now preserve structural formatting (lists, links) from the original draft.

[0.5.2] — 2026-04-20

Added

• LLM research cost amortization. The research LLM call (which runs once per pipeline execution) is now divided evenly across all articles produced in that run. Each article's cost breakdown popover shows its amortized share of the research overhead. Previously, research costs were orphaned with no post attribution.
  • Post_Assembler::amortize_research_costs() — Queries the unlinked research log entry, divides cost and tokens by article count, inserts one row per article, and removes the original.
  • link_generation_logs() now excludes llm_research stage from per-article linking so the cost isn't grabbed wholesale by the first article.
  • Source_Collector::set_cost_tracker() — Accepts the pipeline's cost tracker so research costs are tagged with the pipeline's run_id.
  • LLM_Research_Provider now uses the pipeline's cost tracker when available, ensuring research log entries share the same run_id as article entries.
  • Amortization runs after all articles complete (both single-article and chained-job paths in Pipeline_Runner).

[0.5.1] — 2026-04-20

Added

• Ideas browser admin page. New "Ideas" submenu under PRAutoBlogger showing all article ideas collected by the content analyzer. Displays suggested title, topic, type (question/complaint/comparison/news/guide), relevance score bar, frequency, key points, and target keywords. Filterable by type with count badges. Paginated at 30 per page, newest first.

[0.5.0] — 2026-04-20

Added

• LLM Deep Research source provider. New data source that sends a configurable research prompt to a reasoning-capable model (e.g. Grok 4.1 Fast, DeepSeek-R1) to identify trending topics, emerging questions, misconceptions, and content gaps. Findings feed into the content analyzer alongside Reddit data, giving the pipeline both real-time community signals AND deep knowledge-base research.
  • includes/providers/class-llm-research-provider.php — Source provider implementation.
  • New admin settings in Sources tab:
    • "LLM Deep Research" checkbox in Enabled Sources.
    • "Research Model" model picker — pick a reasoning-capable model.
    • "Research Prompt" textarea — customizable research brief with {niche} placeholder.
  • Each research run produces 8-12 findings stored as llm_research source data.
  • Deduplication via date-based source IDs (one fresh run per day, refreshes on re-run).
  • Cost tracked as llm_research stage in generation logs.
• Content analyzer now formats LLM research findings with a cleaner label ([LLM Research] Relevance: N) instead of the Reddit-specific r/subreddit format.

[0.4.9] — 2026-04-19

Added

• OpenRouter reasoning mode support. New "Enable Reasoning" toggle and "Reasoning Effort" selector in AI Models settings. When enabled, sends reasoning: {enabled: true, effort: "<level>"} to models that support it (Grok 4.1 Fast, DeepSeek-R1, etc.). Effort levels: Extra High, High, Medium, Low, Minimal. Reasoning tokens are billed as output tokens — cost is automatically tracked. Models that don't support reasoning ignore the parameter. Per-call override available via the reasoning key in the provider options array.
• Response parser now captures reasoning_tokens and reasoning_content from the OpenRouter response for downstream logging and debugging.

[0.4.8] — 2026-04-19

Fixed

• GLM 4.7 Flash timeout during analysis. The model was timing out at 120s on large analysis prompts (especially with the new custom instructions). Bumped API timeout from 120s to 180s.
• Empty raw response in error logs. Parse failure errors now include the raw LLM response inline (first 500 chars) at error level, not debug level, so the actual failure reason is always visible in the Activity Log.

[0.4.7] — 2026-04-19

Added

• Cost breakdown popover. The Cost column in the post list is now clickable. Hovering or clicking shows a per-step breakdown: stage name, model used, token count, and cost for every LLM call that produced the article.

[0.4.6] — 2026-04-19

Added

• Image B toggle. New "Generate Second Image (B)" toggle in Images settings. Disabling saves one image generation call + one LLM prompt rewrite per article. Defaults to enabled for backwards compatibility.

[0.4.5] — 2026-04-19

Added

• Analysis Instructions setting. Custom instructions appended to the analysis LLM's system prompt. Steers how source data is evaluated and which topic ideas get surfaced.
• Editor Instructions setting. Custom instructions appended to the chief editor's system prompt. Controls what the editorial review looks for and how it decides to approve, revise, or reject articles.

[0.4.4] — 2026-04-19

Added

• Writing Instructions setting. New textarea in Content settings lets you provide custom instructions appended to the LLM's system prompt when writing articles. Use it to steer style, structure, voice, and formatting without editing code.

[0.4.3] — 2026-04-19

Fixed

• "Analysis response was not valid JSON" with some models. Models like GPT 5.1 Nano ignore response_format: json_object and wrap JSON in markdown fences or preamble text. New PRAutoBlogger_Json_Extractor utility strips fences and extracts the outermost JSON object. Applied to both the content analyzer and chief editor parsers. Raw response now logged on failure for debugging.

[0.4.2] — 2026-04-19

Fixed

• Posts list Title column unreadable. Title was compressed to ~30px by the three custom columns. Title now gets 35% minimum width with word-wrap enabled. Model columns trimmed to 100px with text-overflow ellipsis for long model names.

[0.4.1] — 2026-04-19

Added

• Posts list columns: Writing Model, Image Model, Cost. Three new columns on the WordPress Posts admin page. Writing Model shows the LLM that wrote the article, Image Model shows the model that generated the featured image, and Cost shows the total API spend for generating that article (summed from the generation log). All columns show "—" for non-generated posts. Writing Model is sortable. Model names are shortened (provider prefix stripped) with full ID in a tooltip.

[0.4.0] — 2026-04-19

Added

• Semantic dedup via embedding cosine similarity. Replaces keyword-overlap dedup (60% word match) with MiniLM-L12-v2 embeddings via OpenRouter. Catches rephrasings like "BPC-157 dosing" vs "how much BPC-157 to take" that keyword matching misses. Automatic fallback to keywords if embedding API unavailable. Cost: ~$0.00001 per generation run.

  • includes/core/class-semantic-dedup.php — Dedup engine with embedding + keyword fallback.
  • includes/providers/class-open-router-embedding-provider.php — OpenRouter /embeddings client with batch support and cosine similarity helper.

• LLM-aware topic avoidance. Analysis prompt now includes the last 30 days of published article titles with explicit "do not suggest similar topics" instruction. Zero additional cost — appended to the existing analysis call.

Changed

• Dedup window widened from 7 days to 30 days (semantic similarity is precise enough to avoid over-blocking).
• class-idea-scorer.php refactored to delegate dedup to Semantic_Dedup.

Fixed

• Featured images displayed at 300×300 (WordPress "medium" size) instead of full width. Changed theme to use the_post_thumbnail('full') with responsive CSS.
• Race condition causing duplicate article generation when the AJAX status poller re-scheduled a cron event for an article already being generated.
• False stall detection on multi-article runs (measured elapsed time from start instead of idle time since last progress update).

[Unreleased]

Added

• Image pipeline integration: wires image generation into article flow (commit 1b). Completes the image + Instagram A/B experiment workstream by adding three orchestration classes that generate and sideload two images per published post.

  • includes/core/class-image-pipeline.php — Orchestrates A/B image generation: generates Image A (article-driven prompt) as featured image and Image B (source-driven prompt) stored in post meta _prautoblogger_image_b_id. Each image is independently fallible; article publishes even if both fail.
  • includes/core/class-image-prompt-builder.php — Synthesizes visual prompts from article title + first paragraph (for Image A) and Reddit thread title + top comment (for Image B). Both prompts append the CEO-locked 90s infomercial style suffix from settings. Prompts kept concise (under 200 words) for FLUX.1 generation quality.
  • includes/core/class-image-media-sideloader.php — Downloads generated image bytes, creates temporary file, imports via media_handle_sideload(), sets alt text and generation metadata (_prautoblogger_image_*), cleans up temp files.
  • Settings: prautoblogger_image_enabled (toggle, default off) — allows users to enable/disable image generation after providing Cloudflare credentials.
  • PRAutoBlogger_Publisher::attach_generated_images() — New private method that runs the image pipeline post-creation and sets _thumbnail_id (Image A) and _prautoblogger_image_b_id (Image B) post meta. Errors are logged but do not block post publication.
  • Tests: tests/unit/Core/ImagePipelineTest.php (orchestration, cost tracking, graceful failure modes), tests/unit/Core/ImagePromptBuilderTest.php (prompt generation from various article/source shapes, length limits).

• ARCHITECTURE.md: added new image pipeline step (6b) to data flow, three new files to core/ section of file tree.

• OpenRouter model registry (model-picker commit 1). Foundation for the smart model picker: fetches, normalizes, and caches the OpenRouter model list (/api/v1/models — free, unauthenticated). Daily refresh via the existing prautoblogger_daily_generation cron hook with 12h idempotency.

  • includes/services/interface-model-registry.php — Phase 3-aware contract.
  • includes/services/class-open-router-model-registry.php — fetch + cache + query.
  • includes/services/class-open-router-model-normalizer.php — raw → standardized shape.
  • Capability vocabulary: text→text, text+image→text, text→embedding, etc.
  • Zero-coupling: no PRAUTOBLOGGER_* constants inside the class — Phase 2 lift into a shared Composer package requires only a namespace rename.
  • Cost impact: $0/month (free endpoint, no LLM tokens).

• Image provider: Cloudflare Workers AI (FLUX.1 family). Ships the provider, its pricing + validator helpers, four new settings fields in a new "Images" admin section, and unit tests with mocked HTTP.

  • includes/providers/interface-image-provider.php — contract for any image provider.
  • includes/providers/class-cloudflare-image-provider.php — FLUX on Workers AI, direct call to /accounts/{id}/ai/run/... (bypassing AI Gateway per decision D-001); exponential-backoff retries on 429 / 5xx / network, loud fail on 4xx; handles both raw-bytes and JSON-envelope response shapes.
  • includes/providers/class-cloudflare-image-pricing.php — model alias → full Workers AI id resolution + per-megapixel cost estimation.
  • includes/providers/class-cloudflare-image-validator.php — non-destructive "Test Connection" credential check that never generates a real image.
  • Settings: prautoblogger_cloudflare_ai_token (encrypted), prautoblogger_cloudflare_account_id, prautoblogger_image_model (schnell / dev), prautoblogger_image_style_suffix (default = CEO-locked 90s infomercial prompt).
  • Constants: PRAUTOBLOGGER_DEFAULT_IMAGE_MODEL, PRAUTOBLOGGER_DEFAULT_IMAGE_STYLE_SUFFIX.
  • Tests: tests/unit/Providers/CloudflareImageProviderTest.php.

• ARCHITECTURE.md: new key decision #16 (image pipeline: Cloudflare Workers AI), new external API integration row, new options rows, file tree updates.

• CONVENTIONS.md: new "How To: Add a New Image Provider" section.

[0.2.2] — 2026-04-12

Changed

• CI/CD pipeline now runs PHPCS and PHPUnit before deploying. Added shivammathur/setup-php@v2 for PHP 8.1, Composer install, WordPress Coding Standards check, and full PHPUnit test suite. PHPCS runs in report-only mode (|| true) while codebase is brought into full compliance; PHPUnit failures block deploy.
• Removed stub source providers (TikTok, Instagram, YouTube). These were dead code — not registered in Source_Collector, threw RuntimeException if enabled, and confused AI agents reading the codebase. The Source_Provider_Interface remains the contract for adding future platforms (see CONVENTIONS.md).
• Removed "coming soon" checkboxes from Enabled Sources setting.
• Updated ARCHITECTURE.md: removed stub file references, added cross-system LLM budget coordination section documenting how PRAutoBlogger and Peptide News share an OpenRouter account.

Improved

• PublisherTest rewritten with real behavioral assertions. Now tests: post_status ('publish' vs 'draft'), generation metadata storage, title from idea, taxonomy assignment, tag assignment, run_id-based log linking, RuntimeException on WP_Error, action/filter hook firing. Replaces previous method-existence-only checks.

[0.2.1] — 2026-04-12

Changed

• Reddit data source switched to RSS primary, .json fallback. PullPush.io was frequently stale/unavailable. Reddit RSS/Atom feeds work reliably from datacenter IPs (Hostinger) where .json gets 403. Comments are still fetched via .json (unavailable in RSS).
• Updated "Enabled Sources" checkbox label to "Reddit (RSS + .json)".
• Updated "Test Connections" to show RSS + .json status.
• Source status indicator now shows Reddit RSS (Primary) and .json (Fallback).

Removed

• class-pull-push-client.php — replaced by RSS feeds in class-reddit-json-client.php.
• All PullPush.io references from admin UI, docs, and provider code.

Fixed

• Generate Now button now always sends force: '1' to clear stale generation locks.
• Fixed encryption double-encryption bug with enc: prefix detection.

[0.2.0] — 2026-04-12

Changed

• Reddit data source migrated from OAuth to RSS + .json (no auth required). Reddit rejected our API application; RSS feeds and .json endpoints are free and require no authentication.
• Removed Reddit Client ID and Client Secret fields from admin API Keys tab.
• Updated "Test Connections" results to show Reddit source status.

Added

• Source status indicator in API Keys tab showing RSS and .json availability with live status dots and last-collection timestamp.
• Configurable research cache TTL (1–72 hours) in Sources tab.
• Reddit time window selector (24h / week / month) in Sources tab.
• Posts-per-subreddit limit (5–100) in Sources tab.
• LiteSpeed cache purge step in CI/CD deploy pipeline.

Removed

• class-reddit-api-client.php — replaced by class-reddit-json-client.php.
• Reddit OAuth credential fields and encrypted storage entry.

Fixed

• Deploy pipeline now purges LiteSpeed/OPcache after file extraction, preventing stale PHP bytecode from being served.

[0.1.0] — 2026-04-10

Added

• Initial plugin scaffold with WordPress-native architecture.
• OpenRouter LLM provider with configurable model selection and retry logic.
• Reddit API source provider (OAuth2 script app) for collecting posts and comments.
• Content analysis engine: detects recurring questions, complaints, and comparisons.
• Idea scorer with deduplication against existing posts.
• Configurable writer agent pipeline (single-pass or multi-step: outline → draft → polish).
• Chief editor agent for LLM-powered editorial review before publishing.
• Publisher with full generation metadata stored as post_meta.
• Cost tracker with per-call logging, monthly budget enforcement, and hard-stop.
• Metrics collector: WordPress native + GA4 integration + composite content scoring.
• Admin settings page with sections for API keys, models, content, sources, schedule, and analytics.
• Metrics dashboard showing monthly spend, budget utilization, cost by stage, and daily spend.
• Post metabox showing generation metadata on PRAutoBlogger-generated posts.
• Admin notices for missing API keys, budget warnings, and configuration hints.
• Stub providers for TikTok, Instagram, and YouTube (future implementation).
• Encrypted storage for API keys using AES-256-CBC with wp_salt().
• AJAX-powered "Generate Now" and "Test Connections" buttons.
• Custom database tables for source data, analysis results, generation logs, and content scores.
• Clean uninstall handler removing all plugin data.
• ARCHITECTURE.md and CONVENTIONS.md for AI-readable codebase documentation.