Add direct Compilation output

[raghubetina]

Summary

• add firstdraft plan compile --output <absent-directory> as a direct local materialization mode
• preserve the existing no-flag GitHub Publication journey and URL-only stdout
• reuse the verified artifact parser and atomic materializer without adding .git, formatting, repair, overwrite, or merge behavior
• prepare backward-compatible CLI candidate 0.2.1 because published 0.2.0 is immutable

Contract

• preflight the explicit absent destination before Plan mutation and check it again after Analysis
• recheck exact local Plan bytes and saved Head state before one bodyless, conditional Compilation POST
• never retry an ambiguous Compilation start; classify validated 408 and 5xx responses as outcome unknown
• after a validated 202, include the last validated retained Compilation in every recoverable status, artifact, authentication, or materialization failure
• recover through compilation status and compilation download; after a wait timeout, check current.compilation.id with the read-only status command rather than rerunning Compile
• pin retained identity, transitions, provenance, artifact, bytes, and modes
• keep --output . and automatic design-file relocation outside this packet

Verification

• npm run check
• 167 unit and protocol tests passed
• npm audit --audit-level=low reports zero vulnerabilities
• packed-package smoke proves no-flag Compile makes one Publication and zero direct Compilation starts, while output mode makes one direct Compilation start and no additional Publication

Exact candidate

• base a251df7870491d5b9bdc390c27373933563f99fd
• base tree cdc2bd1eaf4b6d1ccb3b701fa295afee672a723b
• initial reviewed head f5e6641f982ffa2b6eb1f50d5230847b86b59ced
• recovery amendment 12637857836ad0edd184fe636846bfa807bdb26b
• head 89ca49b3046ae86e540886868887eb0e60970ad5
• head tree e62ee3ff1fb6d188c5d2c5a6e5e0efd50b40245f