feat: `w3 delegation create --base64` & `w3 space add <base64>`

[olizilla]

export a delegation as base64 encoded identity CID with w3 delegation create --base64

$ w3 delegation create did:key:z6MkviAsUfBwegmB57byQ7SZTFtX4jNjo315EvgurjWYoTRX --can 'store/add' --can 'upload/add' --base64
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

...yes, what if we put the CAR in the CID! That way we can detect when the input has been truncted, and the screed is self describing... you can paste it into cid.ipfs.tech and it'll tell you it's CAR flavour identity hashed bytes!

import a space from a stringified proof

$ w3 space add $PROOF
did:key:z6MkhfzTwZJ28aRobCp76uXRqzsjH6GNu18WFwMumkAF5ojW

see: https://github.com/web3-storage/w3cli/issues/154#issuecomment-1885042715

Usage

on your machine

• with @web3-storage/w3cli installed.
• Set the space you want CI to upload to as the current space

# create a key for ci
$ w3 key create --json > ci.json

# create a proof for that key. copy paste it to env var in CI
$ w3 delegation create $(jq -r .did ci.json) -c 'store/add' -c 'upload/add' --base64
mA...

in CI

• install @web3-storage/w3cli. No need to login, we pass it the proof to use.
• copy paste the key we generated above (jq -r .key ci.json) as a secret in your ci workflow. KEEP IT SECRET!
• copy paste the proof we generated above as a variable or secret in your ci workflow. it's ok to share this, only the holder of the secret key can use it.

# set key (jq -r .key ci.json) in env so w3cli uses it instead of generating one
$ W3_PRINCIPAL=${{ secrets.w3key }}

# import the space from the stringified proof
$ w3 space add ${{ vars.w3proof }}

# upload yer stuff
$ w3 upload ./my/cool/stuff

License: MIT

[olizilla]

base256emoji was also considered, but wow

$ w3 delegation create did:key:z6MkviAsUfBwegmB57byQ7SZTFtX4jNjo315EvgurjWYoTRX --can 'store/add' --can 'upload/add' --stringify
🚀🪐🎂🌌🚀🥀🌏☀🧡✋🥺😓😓😈🌈😕😝💦✋🥺🌈🌟😓😻🪐🌱🌑🪐✅💻😅👌💟🙌🤫🌑😛✌🥳😂✈💡😈😷🌓😞💞😛🤬🤧🤮💓👐🤙📣🙇👑🍒🙇☝💋👆☺✊🤤🌈💥💛🥀🌿🛰😋🙆😱😔✋😨😆🌴😶✅🤯😇🌑💙🙂😋🥴👆💿🤷😢😣🌓😘🕺😳😎🕺💗⬇💰🤓🤔⚡🌎❄💻➡🌼🌈🌿🤐💞🎤🤩💛🚨😷💆👶😠👏✅🙄🌌😏😒✔💎🌔🤭😂💚😠🛰🤤💦✋🤗☺✌☺💜💃🤤😈😈💝🧡💃💃🤤😻😝🌈⭐🤤💃✋👌😆😳✔🌟😈😴😣💞😳🌟😳✨🙃✋🏃✨💐🤦🙈🙃😴😚💐💋✔😞🖤😔💞🤤❣😓👉😏⭐🎉🤦🤘💥❣✅💐🌈😬😄🤦🤩👇🤘💜💞😑💓✔🙈🤘🌷🙃💗💓🌹😓😬😑🧡💃💃🤤😻😝🌈😈😓🥺✋👌😆😳✔🌟😈😴😣💞😳🌟😳✨🙃✋🏃✨💐🤦🙈🙃😴😚💐💋✔😞🖤😔💞🤤❣😓👉😏⭐🎉🤦🤘💥❣✅💐🌈😬😄🤦🤩👇🤘💜💞😑💓✔🙈🤘🌷🙃💗💓🌹😓😬😑🧡💃💃🤤😻😴🤘⭐🍀😓🤤😳👌😆😳✔🌟😈😴😣💞😳🌟😳✨🙃✋🏃✨💐🤦🙈🙃😴😚💐💋✔😞🖤😔💞🤤❣😓👉😏⭐🎉🤦🤘💥❣✅💐🌈😬😄🤦🤩👇🤘💜💞😑💓✔🙈🤘🌷🙃💗💓🌹😓😬😑🧡💃💃🤤😻😴🤤💃💃✋🌈🌈👌😆😳✔🌟😈😴😣💞😳🌟😳✨🙃✋🏃✨💐🤦🙈🙃😴😚💐💋✔😞🖤😔💞🤤❣😓👉😏⭐🎉🤦🤘💥❣✅💐🌈😬😄🤦🤩👇🤘💜💞😑💓✔🙈🤘🌷🙃💗💓🌹😓😬😑🧡💃💃🤤😻😬😚🌟🍀✋💃😓🌟😻👌😆😳✔🌟😈😴😣💞😳🌟😳✨🙃✋🏃✨💐🤦🙈🙃😴😚💐💋✔😞🖤😔💞🤤❣😓👉😏⭐🎉🤦🤘💥❣✅💐🌈😬😄🤦🤩👇🤘💜💞😑💓✔🙈🤘🌷🙃💗💓🌹😓😬😑🧡💃💃🤤😻😝🤘🌈🤤😝✋👌😆😳✔🌟😈😴😣💞😳🌟😳✨🙃✋🏃✨💐🤦🙈🙃😴😚💐💋✔😞🖤😔💞🤤❣😓👉😏⭐🎉🤦🤘💥❣✅💐🌈😬😄🤦🤩👇🤘💜💞😑💓✔🙈🤘🌷🙃💗💓🌹😓😬😑💃🤤🤘😳💥😁🥀🪐🌴😓🥀💘🥰😎💾🌒😵🚶🔵🤢🎀🐸📸💦🤗🤓👌💗🙂🥴👅💻👊😂🙅😫😭🤩🙏🍎💃✋😣⭐😊😝🎉😉😊💃😚💃😈🌺🌿✋🌈⭐🤤💃✋🌿😳😻🤤🌷✋✋😈😓😓😈🌈💃🌟🌈🌈💥😁🥀🪐👌🔵📣❌🖕😔😵👇🌈😄💘😢🏆💎🐾😌💐⭐😜🤲💔👑📌😴📌🥀🎊🍺💝💅☕🚩💃⭐🥺😚😕🌱🌑🪐✅💻😅👌💟🙌🤫🌑😛✌🥳😂✈💡😈😷🌓😞💞😛🤬🤧🤮💓👐🤙📣🙇👑🍒🙇☝💋👆☺✊🤤🌈💥💛🥀🌿🛰😋🙆😱😔✋😨😆🌴😶✅🤯😇🌑💙🙂😋🥴👆💿🤷😢😣🌓😘🕺😳😎🕺💗⬇💰🤓🤔⚡🌎❄💻➡🌼🌈🌿🤐💞🎤🤩💛🚨😷💆👶😠👏✅🙄🌌😏😒✔💎🌔🤭😂💚😠🛰🤤💦✋🤗☺✌☺💜💃🤤😈😈💝🧡💃💃🤤😻😝🌈⭐🤤💃✋👌😆😳✔🌟😈😴😣💞😳🌟😳✨🙃✋🏃✨💐🤦🙈🙃😴😚💐💋✔😞🖤😔💞🤤❣😓👉😏⭐🎉🤦🤘💥❣✅💐🌈😬😄🤦🤩👇🤘💜💞😑💓✔🙈🤘🌷🙃💗💓🌹😓😬😑🧡💃💃🤤😻😝🌈😈😓🥺✋👌😆😳✔🌟😈😴😣💞😳🌟😳✨🙃✋🏃✨💐🤦🙈🙃😴😚💐💋✔😞🖤😔💞🤤❣😓👉😏⭐🎉🤦🤘💥❣✅💐🌈😬😄🤦🤩👇🤘💜💞😑💓✔🙈🤘🌷🙃💗💓🌹😓😬😑🧡💃💃🤤😻😴🤘⭐🍀😓🤤😳👌😆😳✔🌟😈😴😣💞😳🌟😳✨🙃✋🏃✨💐🤦🙈🙃😴😚💐💋✔😞🖤😔💞🤤❣😓👉😏⭐🎉🤦🤘💥❣✅💐🌈😬😄🤦🤩👇🤘💜💞😑💓✔🙈🤘🌷🙃💗💓🌹😓😬😑🧡💃💃🤤😻😴🤤💃💃✋🌈🌈👌😆😳✔🌟😈😴😣💞😳🌟😳✨🙃✋🏃✨💐🤦🙈🙃😴😚💐💋✔😞🖤😔💞🤤❣😓👉😏⭐🎉🤦🤘💥❣✅💐🌈😬😄🤦🤩👇🤘💜💞😑💓✔🙈🤘🌷🙃💗💓🌹😓😬😑🧡💃💃🤤😻😬😚🌟🍀✋💃😓🌟😻👌😆😳✔🌟😈😴😣💞😳🌟😳✨🙃✋🏃✨💐🤦🙈🙃😴😚💐💋✔😞🖤😔💞🤤❣😓👉😏⭐🎉🤦🤘💥❣✅💐🌈😬😄🤦🤩👇🤘💜💞😑💓✔🙈🤘🌷🙃💗💓🌹😓😬😑🧡💃💃🤤😻😝🤘🌈🤤😝✋👌😆😳✔🌟😈😴😣💞😳🌟😳✨🙃✋🏃✨💐🤦🙈🙃😴😚💐💋✔😞🖤😔💞🤤❣😓👉😏⭐🎉🤦🤘💥❣✅💐🌈😬😄🤦🤩👇🤘💜💞😑💓✔🙈🤘🌷🙃💗💓🌹😓😬😑💃🤤🤘😳💥😁🥀🪐🌴😓🥀💘🥰😎💾🌒😵🚶🔵🤢🎀🐸📸💦🤗🤓👌💗🙂🥴👅💻👊😂🙅😫😭🤩🙏🍎💃✋😣⭐😊😝🎉😉😊💃😚💃😈🌺🌿✋🌈⭐🤤💃✋🌿😳😻🤤🌷✋✋😈😓😓😈🌈💃🌟🌈🌈💥😁🥀🪐👌🔵📣❌🖕😔😵👇🌈😄💘😢🏆💎🐾😌💐⭐😜🤲💔👑📌😴📌🥀🎊🍺💝💅☕🚩💃⭐🥺😚😕🤑🛰🪐✅💻😅💘😹💐😏💅🤑🤪😢💛☄💟😂🎊👑🔴😏🥀😬🍓🔵🎈😟💨👑🌍🌔😲🌖😥☄🧐😔✊🤤🌈💥💛🥀🌿🛰😋🐶📌💡😛😮💧🌗👶🏃🌱😈💰📌👼🎼🌓💝👼🍒💦🎵😨🌌🤭✅📍📸🌖😖💀🙃💋👎💝🧡😫➡😮😆🍎👌🌏😰😐❄🤟💋💩😮😍👎🔴😎💞💿😙⭐➡⬇✅👊👶😜🌗🤤💦✋🤗☺✌☺💜💃🤤😈😈🎂🧡💃💃🤤😻🌟🌈😈😓🥺✋👌🤤😳😳😳✔🌟😈😴😣💞😳🌟😳✨🙃✋🏃✨💐🤦🙈🙃😴😚💐💋✔😞🖤😔💞🤤❣😓👉😏⭐🎉🤦🤘💥❣✅💐🌈😬😄🤦🤩👇🤘💜💞😑💓✔🙈🤘🌷🙃💗💓🌹😓😬😑🧡💃💃🤤😻😬🤘⭐🍀😓🤤😳👌🤤😳😳😳✔🌟😈😴😣💞😳🌟😳✨🙃✋🏃✨💐🤦🙈🙃😴😚💐💋✔😞🖤😔💞🤤❣😓👉😏⭐🎉🤦🤘💥❣✅💐🌈😬😄🤦🤩👇🤘💜💞😑💓✔🙈🤘🌷🙃💗💓🌹😓😬😑💃🤤🤘😳💥😁🥀🪐💩👑😗☺😵🌍🌍🤢🌴😚🐷🤨☕🙆😂🐸🔥👏💩☹😢🤪🌼👅🔴🌈🐸💨🍊💥🙂💦💃✋😣⭐🤮💃😚💃😈🌺🌿✋🌈⭐🤤💃✋🌿😳😻🤤🌷✋✋😈😓😓😈🌈💃🌟🌈🌈💥😁🥀🪐🌴😓🥀💘🥰😎💾🌒😵🚶🔵🤢🎀🐸📸💦🤗🤓👌💗🙂🥴👅💻👊😂🙅😫😭🤩🙏🍎💃⭐🥺😚🎂🐾😆💥💔🚀🪐✅💻😅👌💟🙌🤫🌑😛✌🥳😂✈💡😈😷🌓😞💞😛🤬🤧🤮💓👐🤙📣🙇👑🍒🙇☝💋👆☺🐾😆💥💔🚀🪐✅💻😅👌💟🙌🤫🌑😛✌🥳😂✈💡😈😷🌓😞💞😛🤬🤧🤮💓👐🤙📣🙇👑🍒🙇☝💋👆☺⏎  

[olizilla]

Just base64 mutlibase encoding was considered, but the identity cid wrapping lets use specify that it's a CAR via the cid codec for self describing goodness...

...and as it gets length prefixed we can detect truncation, which for long text screeds seems like a win.