docs: new README as the product page, and release bump to 3.4.0 (#545)

* docs: new README as the product page, keep the old one as README-legacy

Rename README.md to README-legacy.md with a short note saying what it is,
and write a new README: hero, visual feature tour, all six nodes, then
install, data locations, upgrade notes, legacy pages, limits and testing.
Images are compressed WebP in assets/readme. Point the TESTING.md link at
the section's new home.

* docs: retake README screenshots, add shortcuts, pinned bar and trash limits

* chore: release 3.4.0

TESTING.md

@@ -6797,7 +6797,7 @@ checkout or point this harness at a live ComfyUI checkout.
 
 The package-qualified config import also corrects #211: the configured database
 path is honored when PromptManager runs as a ComfyUI custom node. Follow the
-[database path compatibility and safe backup sequence](README.md#database-path-compatibility-211)
+[database path compatibility and safe backup sequence](README-legacy.md#database-path-compatibility-211)
 before restarting an existing deployment.
 
 The ledger records only new dequeued jobs and observed outcomes. Existing

pyproject.toml

@@ -1,7 +1,7 @@
 [project]
 name = "promptmanager"
 description = "A powerful ComfyUI custom node that extends the standard text encoder with persistent prompt storage, advanced search capabilities, and an automatic image gallery system using SQLite."
-version = "3.3.1"
+version = "3.4.0"
 license = {file = "LICENSE"}
 requires-python = ">=3.12"
 dependencies = ["watchdog>=2.1.0", "Pillow>=8.0.0"]