Improve agentic API CLI ergonomics

[odyslam]

Summary

• add workflow-shaped pcl api commands for project, assertion, incident, account, access, release, deployment, integration, protocol-manager, transfer, event, and search actions
• make TOON the default structured output for successes and errors, with --json as the explicit full-envelope option
• make auth status truthful for agents by reporting token validity, expiry, platform URL, and returning a structured nonzero error for expired tokens
• let raw api call accept inline ?query strings, return nonzero structured envelopes for non-2xx API responses, surface request IDs, and write response bodies with --output
• add pcl api incidents --all --limit <n> --output <file> pagination support for incident list workflows
• add executable OpenAPI discovery CTAs, compact inspect output, action-specific body templates, oneOf body variants, and a structured agent manifest
• guard ambiguous/missing write-action flags and preserve API error response bodies for agent recovery
• update README and command help so agents see the current TOON-default / JSON-optional contract

Tests

• cargo fmt --check
• cargo test -q --workspace --all-targets
• cargo +nightly-2026-01-07 clippy --all-targets --workspace --locked --profile dev -- -D warnings -D clippy::pedantic
• git diff --check
• CLI smokes for auth status logged-out/expired token, raw query-string calls, raw API non-2xx exits, --output, default TOON errors, --json errors, public CTAs, and body-template variants

Note: crates/dapp-api-client/src/generated/client.rs has a pre-existing unstaged local change and is intentionally not part of this PR.