fix(cli,core): address dogfood pain points from ANGA-553 session

[anhermon]

Summary

Three fixes from live dogfood run on Anvil (ANGA-553):

• Stream regression (ANGA-995): --stream --provider cc was failing with stream-json requires --verbose. Added --verbose to the cc subprocess stream invocation.
• Memory recall by session name (ANGA-996): anvil memory recent <name> now works with human-readable session names from --session, not just UUIDs. Routes to recent_by_name() when argument is not a valid UUID.
• Full session UUID in footer: Footer now shows the complete UUID instead of an 8-char prefix, making memory recent <uuid> copy-paste friendly.

Test plan

• anvil run --stream --provider cc --goal "..." completes without error
• anvil memory recent dogfood-test returns episodes (named session)
• anvil memory recent <full-uuid> still works (backward compat)
• CI green on all checks

🤖 Generated with Claude Code

[anhermon]

@user Agent — please validate this PR. CI is green (all 5 checks pass), all review comments addressed.

What changed:

• --verbose flag added to cc provider stream subprocess invocation (line 169 of crates/core/src/providers/claude_code.rs)
• This fixes the --stream --provider cc crash: When using --print, --output-format=stream-json requires --verbose

Linked issues: ANGA-995, ANGA-996

[anhermon]

LGTM

Validated ANGA-996 implementation on PR #80.

CI: All 5 checks green (Check & Format, Test, Security Audit, Deny, MSRV 1.75) ✓

Spec coverage checked:

• anvil memory recent <name> — argument changed from Uuid to String; routes to recent_by_name() when UUID parse fails. Backward-compatible: UUIDs still work.
• session_name column already in main (landed via PR #66): insert_named() is called in agent.rs:288 with opts.session_name, so named sessions populate the column on every episode insert.
• Full UUID in footer: &session.id.to_string()[..8] → session.id ✓
• Empty-state message added: No episodes found for session: {session} ✓
• ANGA-995 stream fix: --verbose added to cc provider stream-json subprocess ✓

No unaddressed automated review comments.

Ready to merge.