Upgrade PromptKit and prepare version 0.7.1

docs/releases/v0.7.1.md

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+# Notarius v0.7.1
+
+This release updates the prompt engine and its provider catalogs while retaining
+Notarius's application-owned D&D defaults and subprocess contracts.
+
+## Summary
+
+- Upgrade PromptKit from v0.9.0 to v0.10.0 and adopt its selected provider catalogs.
+- Refresh the profile-source checkpoint identity for the updated catalog.
+- Document profile ownership and upstream catalog compatibility.
+
+## Compatibility
+
+Notarius's CLI, configuration schema, durable artifact formats, and subprocess
+receipt are unchanged. The `dnd-extraction` fallback retains its explicit model
+and settings; the upgrade does not switch it to an upstream default profile.
+
+Upstream catalog selections require review: `deepseek-3-2`, `deepseek-4-flash`,
+and `deepseek-4-pro` are no longer present. Operators selecting or inheriting
+those profiles must supply a complete operator-owned definition or select an
+available profile. `deepseek-flash-latest` and `deepseek-pro-latest` are not
+equivalent aliases and need not preserve previous settings. See the
+[PromptKit integration contract](../integrations/pkg-promptkit.md#profile-sources-and-compatibility).
+
+Existing checkpoints with the previous profile-source identity are not reused.
+Source-keyed chunk plans and existing output artifacts are unaffected.
+
+## Upgrade
+
+Review selected LLM profile IDs and inherited bases before rebuilding from this
+tag. No Notarius configuration migration is required for the maintained examples
+or application-owned D&D defaults. For controlled model settings, use a complete
+[operator profile](../config.md#promptkit-profiles), rather than inheriting a
+volatile catalog entry. Follow the [source release procedure](../release.md)
+for source installation and verification.
+
+## Changes
+
+- PromptKit v0.10.0 preserves the public engine API and adds two opt-in maintained
+  profile names; Notarius continues using its existing adapter and defaults.
+- The dependency graph selects OpenRouter catalog v2.20260922.1 and Rakestrawhome
+  catalog v2.20260922.0.
+- Profile checkpoint fingerprinting and current integration documentation now
+  identify the updated engine.