Spectra 0.1.0: Talk (#13) f7986cb07b0e

## Unreleased

- **Changed: Spectra stands alone.** It no longer uses Oxygen in any way: no `oxy` command, no Oxygen library, no Oxygen files. Identities, composite Ed25519 + ML-DSA-65 signatures and deterministic CBOR are Spectra's own. `spectra identity create` makes your identity in `~/.config/spectra` (`SPECTRA_HOME`); `spectra init` delegates to the machine's instance key itself; `spectra agent add` shows the agent and asks before delegating to it (`--yes` for scripts, `--expires 8h` for an overnight agent), `spectra agent renew` gives it more time and `agent disable` takes the delegation back; `spectra connect` shows the server's instance key and asks you to confirm it (`--expect` checks it instead). Ledgers and identity homes made before this change are not readable: run `spectra identity create` and `spectra init` again.

- **Changed: a project is any kind of work.** `spectra project add NAME [--path DIR] [-d TEXT] [--url URL]`, or `spectra project add FOLDER`; Spectra records the folder and reads nothing in it. `spectra project link P --depends-on Q` draws the links `to: downstream` follows, where they used to be read from `.oxymodules`.

- **Fixed: `spectra inbox --follow` could miss a message posted just as it started.** It now subscribes first and reads the inbox once the server says the subscription holds.

- [x] #26 Own identities, signatures and CBOR — done 2026-11-03: spectra-core's identity, cbor and durable modules (designed after Oxygen's, no shared code); spectra identity create; init, agent add (confirm, --expires, renew, disable) and connect (confirm or --expect) sign the delegation themselves; deps/oxygen and oxy-core removed.

- [x] #27 A project is any kind of work — done 2026-11-03: name, optional folder never read, description, link; spectra project link replaces .oxymodules; tests/cli_project.rs adds a book. Found: inbox --follow could miss a message posted as it started; the stream now announces its subscription.

- [x] #28 The companion specs without Oxygen — done 2026-11-03 in the working copies (SpectraHub Draft 0.4, spectra-vscode 0.3, spectrahub-vscode 0.2); left uncommitted, as those specs had never been committed in their repos.

  1. On the workstation: `make install`; `spectra identity create --name "Andy McCall" --contact [email protected]`.

  2. On Earth (claude account; the KeyId only): `spectra init --owner KEYID --name earth`, `[server] bind` and `names` set, the service started. It prints Earth's instance key. The new build is already installed there and its first ledger set aside (`~/.local/share/spectra.oxygen-era-2026-11-03`).

  3. On the workstation: `spectra connect https://earth.andymccall.xyz:7350`, confirming the instance key matches.

- 2026-11-02 #11 and #12 done. Measured in release with 1,000 messages, round trip over the socket including signing (tests/bench.rs): brief 2.7 ms (target 5), say 3.1 ms (target 10), wait wakes 4.2 ms after a mention (target 100). A single ledger append 0.15 ms. 58 tests. #13 is ready for Andy.

- 2026-11-03 Sprint 2 set up: Andy wants the daemon on Earth and the rest on his workstation. Spec Draft 0.4 adds client and server (§8.6); #20–#25 opened, #13 moved and rewritten for two machines. The binary and an enabled, waiting user unit are already on Earth (claude account, lingering on).

- 2026-11-03 Andy: Spectra must be its own program, not tied to Oxygen or to programming work. Spec Draft 0.5; Sprint 3 opened with #26–#28; #13 moved again. Earth's first ledger (Oxygen identities) is set aside, not deleted.