fix(shell): pass explicit origin and branch to git pull --rebase

[konard]

Fixes #181

Previously `git pull --rebase` was called without explicit `origin ` parameters in both `statePullInternal` (used by `autoPullState` at startup) and `statePull` (used by the manual pull command). This can fail or pull the wrong branch in certain git configurations.

Changes

• `statePullInternal` (`state-repo.ts`): resolve the current branch via `git rev-parse --abbrev-ref HEAD` and call `git pull --rebase origin ` instead of bare `git pull --rebase`
• `statePull` (`pull-push.ts`): same fix applied to the manual pull command
• Both places fall back to `"main"` when HEAD is detached (`rev-parse` returns `"HEAD"`) or on error (using `Effect.orElse` instead of `Effect.catchAll` to comply with lint rules)
• `autoPullState` (`state-repo.ts`): added `Effect.tapError` to run `git rebase --abort` when pull fails, preventing conflict markers from being left in the working tree when the rebase encounters merge commits in the local history

Mathematical guarantees

Invariant: `∀ pull ∈ PullOperations: explicit_remote(pull) ∧ explicit_branch(pull) → deterministic_target(pull)`
Invariant: `∀ pull_failure ∈ RebaseFailures: rebase_aborted(failure) → clean_working_tree(root)`
Precondition: `git repo with origin remote exists`
Postcondition: `git pull --rebase origin ` is called with the resolved branch name; on failure the rebase is cleanly aborted

Test plan

• All existing tests pass (`npm test`)
• Lint Effect-TS passes with 0 errors (`pnpm --filter @effect-template/lib lint:effect`)
• TypeScript builds cleanly (`pnpm --filter @effect-template/lib build`)
• `autoPullState` integration tests continue to pass
• Branch resolution falls back to `"main"` on detached HEAD or error
• CI: E2E (Login context) ✓, E2E (Clone cache) ✓, Lint Effect-TS ✓

[konard]

🤖 Solution Draft Log

This log file contains the complete execution trace of the AI solution draft process.

💰 Cost estimation:

• Public pricing estimate: $0.671248
• Calculated by Anthropic: $0.752274 USD
• Difference: $0.081026 (+12.07%)

🤖 Models used:

• Tool: Claude
• Requested: sonnet
• Model: Claude Sonnet 4.6 (claude-sonnet-4-6)

📎 Log file uploaded as Gist (731KB)

• View complete solution draft log

---

Now working session is ended, feel free to review and add any feedback on the solution draft.

[konard]

🔄 Auto-restart triggered (iteration 1)

Reason: CI failures detected

Starting new session to address the issues.

---

Auto-restart-until-mergeable mode is active. Will continue until PR becomes mergeable.

[konard]

🔄 Auto-restart-until-mergeable Log (iteration 1)

This log file contains the complete execution trace of the AI solution draft process.

💰 Cost estimation:

• Public pricing estimate: $2.732898
• Calculated by Anthropic: $1.955080 USD
• Difference: $-0.777818 (-28.46%)

🤖 Models used:

• Tool: Claude
• Requested: sonnet
• Model: Claude Sonnet 4.6 (claude-sonnet-4-6)

📎 Log file uploaded as Gist (2040KB)

• View complete solution draft log

---

Now working session is ended, feel free to review and add any feedback on the solution draft.

[konard]

🔄 Auto-restart triggered (iteration 2)

Reason: Uncommitted changes detected

Starting new session to address the issues.

---

Auto-restart-until-mergeable mode is active. Will continue until PR becomes mergeable.

[konard]

🔄 Auto-restart-until-mergeable Log (iteration 2)

This log file contains the complete execution trace of the AI solution draft process.

💰 Cost estimation:

• Public pricing estimate: $0.242514
• Calculated by Anthropic: $0.271120 USD
• Difference: $0.028605 (+11.80%)

🤖 Models used:

• Tool: Claude
• Requested: sonnet
• Model: Claude Sonnet 4.6 (claude-sonnet-4-6)

📎 Log file uploaded as Gist (2274KB)

• View complete solution draft log

---

Now working session is ended, feel free to review and add any feedback on the solution draft.

[konard]

✅ Ready to merge

This pull request is now ready to be merged:

• All CI checks have passed
• No merge conflicts
• No pending changes

---

Monitored by hive-mind with --auto-restart-until-mergeable flag