feat: support Interactive Authorization flow

[nanderstabel]

Description of change

Adds support for the Interactive Authorization flow as described here.

Links to any relevant issues

• feat: support Interactive Authorization Flow ssi-agent#342

How the change has been tested

Manually tested, for more details, see: https://github.com/impierce/ssi-agent-integration-server

Definition of Done checklist

Add an x to the boxes that are relevant to your changes.

• I have followed the contribution guidelines for this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

[Copilot]

Pull request overview

Adds support for the OID4VCI Interactive Authorization flow by extending the credential-offer handling to initiate interactive authorization (when supported by the Authorization Server), prompting the user to share credentials, sending the interactive follow-up, and then continuing with the token request. This PR also refactors backend state tracking by consolidating multiple core_utils.active_* fields into a single active_flow context that can represent SIOPv2, OID4VP, and OID4VCI offer stages.

Changes:

• Introduces an interactive-authorization path in send_credential_request, plus a new reducer to send the interactive follow-up and resume the OID4VCI flow.
• Refactors backend state to store active flow context in CoreUtils.active_flow (replacing several dedicated active_* fields).
• Propagates a new is_interactive flag through prompts/actions and the frontend dispatch path.

Reviewed changes

Copilot reviewed 25 out of 26 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
unime/src/routes/prompt/share-credentials/+page.svelte	Includes is_interactive in the credentials-selected action payload.
unime/src/routes/prompt/credential-offer/+page.svelte	Alters destroy-time cancellation behavior for the credential-offer prompt.
unime/src/routes/+layout.svelte	Extends code-received dispatch payload with is_interactive.
identity-wallet/src/state/user_prompt.rs	Adds is_interactive to the ShareCredentials prompt payload.
identity-wallet/src/state/qr_code/reducers/read_credential_offer.rs	Stores OID4VCI offer context using the new active_flow structure.
identity-wallet/src/state/qr_code/reducers/read_authorization_request.rs	Migrates connection/authorization-request state to active_flow; sets prompt is_interactive.
identity-wallet/src/state/mod.rs	Updates state serialization comment to reflect core_utils skipping.
identity-wallet/src/state/dev_mode/reducers/dragon_dynamic_profile.rs	Updates dev-mode “share credentials” action to include is_interactive.
identity-wallet/src/state/credentials/reducers/send_token_request.rs	Consumes new active_flow context; adjusts state validation behavior for interactive flow.
identity-wallet/src/state/credentials/reducers/send_interactive_authorization_request_follow_up.rs	New reducer: sends interactive follow-up request, records history/connection, resumes token request.
identity-wallet/src/state/credentials/reducers/send_credential_request.rs	Adds interactive authorization initiation and credential-selection prompt for interactive follow-up.
identity-wallet/src/state/credentials/reducers/refresh_credential_status.rs	Switches key-id resolution helper import to oid4vc-core utility.
identity-wallet/src/state/credentials/reducers/mod.rs	Exposes the new interactive follow-up reducer module.
identity-wallet/src/state/credentials/reducers/handle_oid4vp_authorization_request.rs	Extracts shared OID4VP token/history-building and history/connection update utilities; gates reducer on is_interactive.
identity-wallet/src/state/credentials/mod.rs	Switches JWT-claims helper import to oid4vc-core utility.
identity-wallet/src/state/credentials/actions/credentials_selected.rs	Adds is_interactive and dispatches both OID4VP handling + interactive follow-up reducers.
identity-wallet/src/state/credentials/actions/authorization_code_received.rs	Adds is_interactive to code-received action.
identity-wallet/src/state/core_utils/mod.rs	Introduces ActiveFlow and Oid4vciStage enums; replaces multiple active fields with active_flow.
identity-wallet/src/state/core_utils/helpers.rs	Removes local JWT helper utilities in favor of oid4vc-core utilities; updates key-id resolution usage.
identity-wallet/src/state/connections/reducers/handle_siopv2_authorization_request.rs	Reads SIOPv2 authorization request from active_flow.
identity-wallet/src/state/common/mod.rs	Updates tests to include is_interactive in ShareCredentials prompt construction.
identity-wallet/bindings/user_prompt/CurrentUserPrompt.ts	Updates generated binding for ShareCredentials prompt to include is_interactive.
identity-wallet/bindings/actions/CredentialsSelected.ts	Updates generated binding to include is_interactive.
identity-wallet/bindings/actions/CodeReceived.ts	Updates generated binding to include is_interactive.
Cargo.toml	Bumps oid4vc git revision; removes workspace package name field.
Cargo.lock	Updates lockfile for the bumped oid4vc revision and dependency changes.

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[Oran-Dan]

looks good! a few minor comments to resolve

[Oran-Dan]

Looks good from my side. Only comment left will be addressed by Daniel