fix: log streaming for Capgo Builder (public) (#1510)

* fix: log streaming for Capgo Builder (public)

* feat: replace custom JWT with jose

* fix: lint

* fix: add standard JWT claims for build log stream tokens

Add issuer, audience, and subject claims to the JWT token for better
security. Move user_id to the standard 'sub' claim.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* fix: add missing fields to BuilderStartResponse

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* docs: explain what is build_logs_direct

* fix: dependencies syntax

---------

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Co-authored-by: Martin DONADIEU <martindonadieu@gmail.com>

Author: 4 people

.gitsecret/paths/mapping.cfg

@@ -2,7 +2,7 @@ internal/how-to-deploy.md:84fb650102327a9a40e845ffe90c9f2e4ab21bdbacee13279fc420
 internal/supabase/.env.local:4045b99d44963589c422b460a9c9d029a57b6714905440d5d43fd97eff4a5adb
 internal/cloudflare/.env.local:df3e28094bb5cea2dbf71368cef66238af8d6c9631fd617fd9c14bd884826138
 internal/cloudflare/.env.preprod:725dd8bb110bbb401e552d4d6b5f7b738261b9af33408aa8658c5c3508275ff1
-internal/cloudflare/.env.prod:4cad017cdab06004e7db5d9804215aa081f48b063eb35f1598e2acd5626f61ec
+internal/cloudflare/.env.prod:d9b6a85e6b58ab1073e8b9e317f5b8319e5106b4e421cbc4adab9d6a825e0b18
 internal/forgr-key.jks:92f8d5f1e532a1d9d6359a142ff922ad2f835f90cfae004222ab2a5cd17fa999
 internal/forgr-key.jks.base64:0bc27503ed4b743318ac93186a3d731f5326d1e12ea9d50402b8b36bc3efec9e
 internal/capgo-394818-68ad1517d330.json:de826cfbdcf7412174ff8b14f82635edf2c67ceb7d14928d8cb9067538155fa2